Dynojet Deceleration Popping

The Dynojet Power Commander V is a vital first step into the world of motorcycle fuel tuning. Or use the built-in autotune feature to create your own. It is much better than before but I think I should have left the 144 and 150s in, right when I get to 60 mph it starts backfiring and dying, then backfires on deceleration. Keep in mind the 07's don't have an adjustable needle stock but the dynojet kit comes with it. improve deceleration popping without affecting idle; you can not do this with carburetion. Improves Horsepower, throttle response, and rideability. The stock mapping is a pig rich 12. Ideally, don't waste time on the controller and just send off your ECU to be flashed. If the slide diaphragm becomes pinched or is. It also pretty much eliminates any decel pop from the pair valves. Since I put high quality aftermarket pipes on it (with baffles installed) the problem is more noticable, but there was sputtering even with the factory pipes. Secret of Engine Problem Diagnosis- Fuel Trims Pt. who all here has yoshimura and what are you jetted at i'm noticing a little popping on decel from like 4ht/5th gear high rpms after i let off the gas, is that normal. I have checked for exhaust leaks every way I know how and came up with nothing. 1 by Schrodingers Box. Dynojet has a video on their site explaining Decel Pop solutions. we also take into account your riding habits and tune accordingly. c) Throttle modulation is noticably improved over what can be achieved with a fuel tuner alone. Seventy horsepower at 5500 rpm doesn’t make the T120 a firebreather (and it’s lights out only 700 rpm later), but 71. While the bike sounds better (to me), I'm getting backfiring on deceleration, and often at idle right after start up. The popping could be an exhaust leak. Discussion Starter • #1 • Jul 14, 2012. Decel pop is a fairly common issue when you start modifying the intake and exhaust on fuel injected motorcycles. It can vary per the vehicle and modifications) Adds aggressive crackle and pop during deceleration letting off. It ran cooler than stock, gave me great MPG, and helped increase my power all at once. Re: Popping back after stage one upgrade: One more tuner option is the Dynojet Power Vision tuner. Popping on decel Hello guys i have a problem, my 660 grizzly was idling kinda high and it was causing the atv to lurch forward whenever i put it in gear, so i was told to lower the idle screw, it cleared the problem right up, now though, i get a popping, sputtering, on deceleration. If your bike has Fuel Injected, we recommend the Dynojet PowerCommander. I wasn't expecting to have this significant amount of decel pop and the associated flames and just want to make sure I am not seeing anything out of the ordinary. 00 plus shipping. You should get the bike dyno tuned. Plug you computer into you PC V and make sure this map is loaded: 328-005 Akrapovic full exhaust, Stock or aftermarket air filter. Check that fuel sprays from the accelerator pump nozzle when rolling on the throttle (test with engine off). Discussion in 'Trading Tunes' started by Pig9r, 20050DynoFinalMap_TOR_CatBypass_Decel. This happens with high flow exhausts that allow more fresh air to be pulled into the pipe, causing the exhaust temperature to rise and detonate any unburnt fuel. If it hasn't been done, back out your needle for the low speed jet about 2. 5) Pinched or cracked slide diaphragm. Needin' some help!!, Now that the weather is gettin hot here in NB My YFZ is starting to pop alot on deceleration and has a bigger hesitation when I punch the throttle, just need to know what to adjust, I have the dynojet kit so i wont get into #'s or clip settings but what makes the popping go away. 2) Check that the Needle Jet (nozzle) is installed correctly. It just aids in the ease of tuning, but if you have the time, dyno access & ability you can purchase the seperate cable & tuning software to reprogram the ECU itself. - Popping or spitting through the carb occurs when the throttle is opened. for Lower rpm engines. Have a website? Want to provide tuning information? Please do not plagiarize this page - it took years to develop and write and is not based on any other previous work by anybody else. If the O ring is missing, it will pop. Decreased decel enleanment to 0. Bottom line is that I need to dyno tune my bike - ever since I mounted an after market slip-on it doesn't like the cold, gurgles at constant rev/mph, and sometimes pops upon rapid deceleration. he made mine & it is better than any other map i have found. It also pretty much eliminates any decel pop from the pair valves. Rallying Icon Tommi Mäkinen on the Absolutely Brilliant. The AFR graph below shows a 96" Road Glide running at about one-quarter throttle and making 25 hp during my cruise test. Ok, here's what going on. The main reason engine backfires is because a valve is not closed when the spark plug fires. Dynojet recommends 2. The deceleration noise (like a semi) is probably more to do with the baffle design of your pipes (my pipes do it quite loudly with the baffles out). Discussion in 'Engine, Fuel and Exhaust' started by Doug S, Sep 12, is running a 45 low and 160 high and I do think the low is a little rich for it but maybe they put it in there to stop deceleration popping. Fuel Moto maps for Dynojet PV-3 available. My 450 grizz pops while going down steep hills on decel. Thanks Bill. Dynojet PC5. Secret of Engine Problem Diagnosis- Fuel Trims Pt. The bike would stall out all over the place and usually at the most unfortunate times such as on the side of a steep mountain single track. Then today I entered autotune mode and rode it like I normally would. Dynojet Research - 15-026 - Power Commander V. I bought the bike used with the exhaust and didnt ask if they had rejetted or tuned the carb for the exhaust. I just received my PCV and Auto tune from SupebikeSupply(thanks to Mary!),after more than 10 hours of rewiring and test riding,i am totally dejected now. Deceleration popping in the exhaust – Dynojet Research Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. Dealer no help so I bought the PCV fuel manager no ignition, loaded stock Vaquero map from dynojet, installed TB gasket, marbled the reed valve hose and re-tightened the head pipe bolts. Deceleration backfire tuning your deceleration backfire tuning your deceleration backfire tuning your deceleration backfire tuning your. my setup was running pretty consistent for a few weeks leaving the autotune enabled with +/- 10% change allowed. Find many great new & used options and get the best deals for Thunder Heart Performance - 309-362 - Thundermax ECM with Integral Auto Tune System at the best online prices at eBay! Free shipping for many products!. Then accept the trims thus changing your base map (whatever that base map was). Hi, Die maps beziehen sich alle auf offenen luftfilter. Got an appointment for the next Saturday. The reason you do not hear this on a bike with a stock exhaust is due to the baffling of the stock exhaust. It will pop, back fire on decel and run like crap, but it will be LOUD. my elevation is about 500 feet. It brought on the loud decel pop and popcorn type popping immediately on throttle cut to 0% tps all the way down the rpm range. 1 by Schrodingers Box. An open exhaust allows additional air to be “sucked up the pipe” during closed throttle and any unburned fuels, then ignite and “snap/crackle/pop”!. Additionally, we are extending our return policy at this time. Installing the jet upside down will adversely impact the fuel spray and needle metering. Unlocking untapped potential from your Harley is made simple for the end user with Dynojet's latest addition to the Power Commander series. I wasn't expecting to have this significant amount of decel pop and the associated flames and just want to make sure I am not seeing anything out of the ordinary. If you check a generic map at a properly equipped tuning center you will see that you bike will be rich in spots and lean in spots and you will have the dreaded decel popping. map format is for the original PC3’s which had a serial port, the newer. The dynojet kit recommended the 165 main but the stock is a 172. I was in the carb and it has a 142 pilot and. Dynojet Research - 15-026 - Power Commander V. I ended up going 3/4 turns out which is right at 2. If you richen the idle circuit enough to stop popping on decel it will be running way rich on the idle circuit when just sitting there idling. It will stop the popping on decel. Switch Housing Swap (Honda) Intake. Always change your exhaust flange gaskets whenever removing or having loosened your head pipes. In some cases it is believed that the stock fuel curve on the VTX is not adequate for any modifications with the exhaust that are done. Discussion Starter • #1 • Jul 14, 2012. Yes blocking the the pair valve hose or getting pair valve plates (get a kit that includes a connector so you don't get an engine light) will stop the popping on decel. It just aids in the ease of tuning, but if you have the time, dyno access & ability you can purchase the seperate cable & tuning software to reprogram the ECU itself. The CV carb is dependent upon vacuum to function properly. When you suddenly close the throttle, the incoming air is choked off and the closed throttle also causes the bike to return to idle on the very lean idle circuit. Go to a MotoGP race, they pop like crazy!!!!!. With just a setup of pipes installed it is not imperative to remap the fuel curve as it will not run lean enough to cause any damage. The typical horsepower gain achieved with this package is 18-20 horsepower (187-189). EFI Tuning Electronic Fuel Injection, or EFI for short, is the method utilized to properly tune most engines that power today's powersports equipment. Worked out the final arrangements a week or so back to take my 2015 RM w/ STG1 and HFAC in so they can use it as a project bike to work up their own tune for the PVCX. I just want to reduce the popping and make my bike run smoothly, if possible. That is to say, when you pull the baffles, the mufflers draw cold air which causes unburned fuel in the exhaust to ignite and burn (pop). It also gives the rider more torque, more horsepower, and lowers popping during deceleration. It adds an additional measure of fuel during the very high intake vacuum that exists during closed-throttle deceleration at road speeds. Then took that autotune and flashed it to my ecm. com Exhaust Popping on Deceleration. i rejeted the carb with a 165 main, 48 pilot, set the needle at the third position, and turned the fuel mixture screw one turn. By the way, I did another 60 mile run today, just because I enjoyed yesterday so much and noted that my mpg were up over 10% even though I have been even more "heavy handed" than usual. 14 Responses to "Custom Exhausts On Fuel Injected Harleys. I've checked that the headers are mounted correctly to the cylinders and there are no leaks. Decel pop is a fairly common issue when you start modifying the intake and exhaust on fuel injected motorcycles. This thread is for sharing what you've experienced while tuning the Indian Scout, Scout Sixty, and Bobber models for increased performance. Or an easy fix for a faulty actuator. Doesn't seem to be any flat spots, no popping on deceleration, etc. The ability to adjust your motorcycle’s fuel map is vital if you have added a high-flow air filter, aftermarket exhaust system or smog block-off plates. Exhaust leaks can cause decel pop, make sure the exhaust is sealed completely at the motor, and at any other connections. i kinda wish this thing. The EJK is being a pain in my rear at the moment. I agree with MotoChris521, since your carb slide is down during decel the main and needle don't make a big difference. High Flow Air Filters. The service manual should help you on this. With a Power Commander equipped EFI bike you have more control over the fuel curve than with carburetors, i. Carb farts and decel popping are both unacceptable for yours truly. Whenever possible use the. Also if your timing has been advanced a lot with the ECU tune you are going to want to have your Power Commander maps checked out to make sure your AFR is good now anyway. fuelmoto · EFI tuning and Exhaust Expert. A backfire is a combustion that’s happening outside of the combustion chamber. Have had my 06 R* since new,and on the dyno to make sure new jetting isn't too lean (168 main and 38. It can vary per the vehicle and modifications) Adds aggressive crackle and pop during deceleration letting off. May also work for DRZ400S. If you do that, the popping will stop as soon as you hit whatever threshold you set (like 40kpa). It also gives the rider more torque, more horsepower, and lowers popping during deceleration. One other thing to try to help with the decel pop is to raise the idle a little, I got that tip from Biglry (of B&B) and it did in fact work for me. The Mikuni is very simple and straightforward to make jetting changes. Daily Slideshow: This is one versatile desert-dwelling off-road machine with a venomous side. The stock mapping is a pig rich 12. The ability to adjust your motorcycle’s fuel map is vital if you have added a high-flow air filter, aftermarket exhaust system or smog block-off plates. with a Power Commander equipped EFI bike, you have more control over the fuel curve that with carburetion. dirty because unburned mixture will build up in the exhaust pipe over. Exhaust leaks can cause decel pop, make sure the exhaust is sealed completely at the motor, and at any other connections. Equipping you for Expert DynoJet Operation - from WinPEP7 operation to comprehensive graph interpretation! This class has it all - 3 days of intensive instruction with individual training materials and hands on training. You can now select from 3 different decel-pop reduction levels to help with this annoying and sometimes unsettling. The original version of this How-to recommended simply pulling. It just aids in the ease of tuning, but if you have the time, dyno access & ability you can purchase the seperate cable & tuning software to reprogram the ECU itself. Save Share. djm format as it has more data and is capable of more customization. A little popping on decel is normal. Once you remove the AIS from the bike, this kit can be used to block off the port/hose on the bike. Good fuel mileage, typically 42-45 at reasonable highway speeds. Dependent on the bike and if you have swapped to an aftermarket air filter/exhaust set up you may need a flash tune or some. Wondering if the decel popping may have been from being to rich? EDIT. Some prefer to keep the stock upper (for the stealth factor) and install a larger lower crank pulley. Decel pop is a fairly common issue when you start modifying the intake and exhaust on fuel injected motorcycles. Re: popping on decel (fuel injection) If it is doing it just after you close the throttle and not in a specific rev range you are not going to be able to fix it. All combustion on a motorcycle should happen in the combustion chamber. Backfire on Decel. Or would popping on decel be normal with that exhaust setup? Bike tops out at 95mph, when it could easily do 105 last year before i played with jets to get rid of popping. Does the popping in that particular RPM range throw any flags or indicate any particular problem, or do you know what I may want to look at within my tune to alleviate this popping?. According to the dynojet screenshot, the 883 Sportster in its stock shape delivered a maximum of 45. Bike runs good and pulls hard, only issue is it cackles on decel, it does not back fire. Deceleration popping in the exhaust - Dynojet Research Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. ) • Changing the front wheel on 3rd gen. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. BACKFIRE in the exhaust = too much fuel in the exhaust igniting before it exits the pipe. That is to say, when you pull the baffles, the mufflers draw cold air which causes unburned fuel in the exhaust to ignite and burn (pop). Our fuel management and diagno. Re: Carb Tuning guide (setting up a Dynojet or Factory Pro k Post by VTRDark » Wed Dec 19, 2012 10:50 pm Need to have mine sorted now, I've messed with the airbox enough to upset the top end but it's much stronger lower down, so I'll have a think armed with this and start playing around with jets. Dynojet CAN-Link Expansion Port allows interfacing with other Dynojet products, such as the Wide Band 2 or Auto Tune Module 1; 2GB of internal memory provides a robust capacity for tune files and data logs; 1 When outfitted with a Dynojet Auto Tune or Wide Band 2 System 2 When used in conjunction with Log Tuner software. As I have shared in earlier posts, I’ve had to learn about re-jetting the stock Keihin CVK carburetors used on the 2008 Hinckley Triumph Bonneville because I modified the air intake and exhaust system. • Dynojet does not recommend inputting values in the 0% column of the Target AFR tables. Yes blocking the the pair valve hose or getting pair valve plates (get a kit that includes a connector so you don't get an engine light) will stop the popping on decel. Suzuki Katana Carb Sync. My 450 grizz pops while going down steep hills on decel. The sports tunes are least concerned about emissions, this means that the air injection into the exhaust pipe is not needed and so the popping on decel is reduced or not there with tor tune. i kinda wish this thing. DRAGO'S DYNO SERVICES Here at Drago's Bike Works, We Offer Custom Dyno Tuning On Our New 250-Dynojet With Brake. This is the #1 cause of deceleration popping (crackling). It still has the VM26's, but they have been fitted with a Dynojet kit. 5 pilot, needle slide on 4th clip) and adjusted the pilot mixture screw ,looked to be ok in all RPM ranges w a max. my elevation is about 500 feet. Then took that autotune and flashed it to my ecm. 5” opening, and the billet tip is straight. The Fuelpak and the Fuelpak maps will. That should work for you if its to lean because its 50 degrees than bump it to a 100. In a previous post, How-To: Sizing Pilot Jet, I explain that the fuel screw setting needs to fall in the 1-3 turns out range. Power Commander Tips: Deceleration Pop Power Commander 5 Install: 2013 Suzuki M109R Power Commander 5 Install: '01-03 Suzuki GSXR 600, '02-03 GSXR 750, '01-02 GSXR 1000. Dynojet does not recommend inputting values in the 0% column of the Target AFR tables. While taking the appropriate precautions for the safety and well-being of our customers and employees, we are continuing to fulfill all orders and support our customers. Over 2,500 Bikes tuned. Stock pilot, Needle in stock location 3rd. If you were to purchase an exhaust that is similar in size, shape, volume, and design then remapping the fuel injection may not. Unlocking untapped potential from your Harley is made simple for the end user with Dynojet's latest addition to the Power Commander series. Roll off the throttle smoothly, doing so prevents causing a lean condition which is the cause of the popping. Re: Carb Tuning guide (setting up a Dynojet or Factory Pro k Post by VTRDark » Wed Dec 19, 2012 10:50 pm Need to have mine sorted now, I've messed with the airbox enough to upset the top end but it's much stronger lower down, so I'll have a think armed with this and start playing around with jets. But I'm getting some decel popping especially while in 2nd, 3rd, and probably 4th gear. Posted on Sep 18, 2009. Using wideband oxygen sensors (commercial version only) Automatic knock detection and removal. Dynojet Power Commander V for 2001-2016 Harley Davidson - the leading edge in fuel injection and ignition timing adjustment. my setup was running pretty consistent for a few weeks leaving the autotune enabled with +/- 10% change allowed. The PCV can give you better overall fuel mapping. Reduces "decel pop". I am not arguing the merits of a proper dyno/tune in the hands of a proficient tuner but my 2 cents: i will never have the skills (nor the ballz) to run a bone-stock Busa to its fullest potential so I am perfectly OK with NOT chasing that. From the DynoJet website: Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. The popping that you're dealing with is more likely the result of air inversion, not jetting. The DRZ is most 'rideable' with a little deceleration popping. Dynojet Powervision 3 Other Notable Yamaha Forums. Dynojet's tech support was very helpful in the two instances that I needed some recommendations. My 450 grizz pops while going down steep hills on decel. Also hab gerade mal regergiert was das für ein auspuff ist was Du schreibst Denke Du kannst S. No decel popping, no lagging what so ever and it just seems the bike wants to do everything I ask with no hesitation. This has 100% cured the problem. Even if you read your Dynojet papers - they described in mine the popping during deceleration and stated that main jet and needle doesn't do a thing. When you suddenly close the throttle, the incoming air is choked off and the closed throttle also causes the bike to return to idle on the very lean idle circuit of the carb(s). Started off with map from Dyno (12V076000301. Unlike other fuel management systems that can only add fuel, Fuelpak adds. Dyno jet did try about 12 months ago to get a power commander to work but due to the system couldnt get it to work correctly. You will probably get popping on decel from time to time. So, the popping you are hearing is not back-firing. Discussion Starter • #1 • Jun 23, 2015. 2001 Arctic Cat 500 manual shift. Victory Motorcycles: Motorcycle Forums. is the world leader in the development and manufacturing of performance enhancement products and tools. If the slide diaphragm becomes pinched or is. I've been getting a few PM's so I figure I'll post my experience and tuning data. Also added +4 to the 0. pipe on deceleration and you'll also get backfires when the carbs are. Joined Sep 10, 2005 · 105 Posts. Described to Dyno tech support and they suggested adjusting the. 5RS) When I'm in gear and off throttle, my car tends to pop and it kind of sounds like a backfire. By EvolutionM - November 29, 2018. _____ 2008 ZX-14 Flies out PCIII / USB Brocks Alien head Puig DB Screen. If you richen the idle circuit enough to stop popping on decel it will be running way rich on the idle circuit when just sitting there idling. Neither system helps nor hurts performance. Using my wide band o2 meter I would get a slight popping on deceleration with a 12. It is a popping resonating sound generated by a lean condition on decel. I did still get some popping at decel from high speed/high rpm but it didn't cut out and die and I didn't have to push it home tonight; bonus. with a Power Commander equipped EFI bike, you have more control over the fuel curve that with carburetion. 2) Check that the Needle Jet (nozzle) is installed correctly. Ok, here's what going on. 4 I think, then did a run with A/T came back hooked up to laptop accepted trims, repeat a few times (luckily i have some acreage to test run in) after 3-4 sessions the adjsutments made by auto tune got smaller so i just went with that and it runs great. I have a 2012 HD Softail Deluxe that has a significant backfire issue on deceleration. Decel popping has nothing to do with jetting on a gen2 KLR. Bike runs good and pulls hard, only issue is it cackles on decel, it does not back fire. I tried lowering the main jet to a 102 and it had the same problem. There was also a lot of bogging. Using narrowband oxygen sensors. During deceleration, the fuel should be turned off for minimum emissions, but Harley does not seem to do that all the time, resulting in the infamous decel pop. 1994 750 magna popping on acceleration and deceleration. You should get the bike dyno tuned. For example, a 2003/2004 Cobra with only intake and exhaust mods can make in the neighborhood of 450rwhp and 470rwtq with the addition of a 2. You will probably get popping on decel from time to time. It brought on the loud decel pop and popcorn type popping immediately on throttle cut to 0% tps all the way down the rpm range. djm format as it has more data and is capable of more customization. Before I do anything i might turn in the air screws 1/2 a turn and see if its better or worse. DynoJet Research- with no introduction really necessary, DynoJet brings us the Power Commander. A value of positive or negative 15-40 should be added and can reduce popping if it is still noticeable. Decel pop is normal occurrence, but it is not normal. Introducing Vance & Hines Fuelpak Pro. For older Magnetti Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. Ran it that way for a while, didn't seem to completely get rid of the decel popping and I had an additional problem that the quad would cut out racing over whoops at the bottom of a hill climb (re:Olds). Neither system helps nor hurts performance. I herd that a worn cam or a torn. No popping on decel and smooth sailing. carboonX · run map # 416-003 from dynojet Button settings 0 low +1 mid +2 high accel pump settings 75 sensitivity +20% fuel 15 rpms decompressor sings!!!!! Show Full Signature. AFR's in the high rpm range set to 13 and everything else feathered in between. The Dynojet Power Commander V is a vital first step into the world of motorcycle fuel tuning. Believe or not there is some popping on decel even with the stock can, you just can't here it. 1:1 AFR below 70% throttle and 13. Decel-Pop reduction The biggest complaint HD owners have with aftermarket exhaust systems is decel popping. With a Power Commander on your bike, it will run smoother, cooler and have better throttle response. _____ 2008 ZX-14 Flies out PCIII / USB Brocks Alien head Puig DB Screen. A complete ecosystem for creating, storing and delivering maps to FP3 users worldwide. 5) Pinched or cracked slide diaphragm. 1 by Schrodingers Box. If you were to purchase an exhaust that is similar in size, shape, volume, and design then remapping the fuel injection may not. DRAGO'S DYNO SERVICES Here at Drago's Bike Works, We Offer Custom Dyno Tuning On Our New 250-Dynojet With Brake. you can improve deceleration popping without affecting idle; you can not do this with carburetors. Sorry for the delay in replying. But if it doesnt, then I won't do it. This has 100% cured the problem. And I'd been reading that removing the smog gear helps alleviate the popping under deceleration. With a Power Commander equipped EFI bike you have more control over the fuel curve than with carburetors, i. BRIAN "GO Buckeyes, Wildcats"! 2015 DL650 XT "Hector" 1997 Valkyrie "Dolores" 1997 Honda Valkyrie 1500 custom. In any case, it’s open-loop on deceleration. is the world leader in the development and manufacturing of performance enhancement products and tools. Even deceleration, the engine continues to rumble, but a little choppy in 2nd and 3rd gear. Secret of Engine Problem Diagnosis- Fuel Trims Pt. Still won't address the 'decel pop', but in terms of added performance benefits that's where it's at (rather than the fuel controller). 6k RPM and max torque of [email protected] 3. Show Full Signature. The engine should die if you bottom out the screw. Using the PV-1 on a 2014 VRSCDX with Tab and K&N filter. Dealer no help so I bought the PCV fuel manager no ignition, loaded stock Vaquero map from dynojet, installed TB gasket, marbled the reed valve hose and re-tightened the head pipe bolts. Dynojet Power Commander V for 2001-2016 Harley Davidson - the leading edge in fuel injection and ignition timing adjustment. Page 1 of 2 1 Popping on deceleration is, just as the author said, the result of unburnt fuel detonating in the exhaust. The Mitsubishi Evolution Returns! As an electric crossover… e-Evolution Concept incorporates the strengths of a sport utility vehicle (SUV), electric vehicle (EV), and the ability to integrate new systems for a connected mobility customer experience. The typical horsepower gain achieved with this package is 18-20 horsepower (187-189). Using my wide band o2 meter I would get a slight popping on deceleration with a 12. @60,80,100% to maximize power by JD (Hord Power) on Dynojet Dyno, Target AFR elsewhere mid-13s using the Innovate Motorsports LM-2 data logger/wideband AF meter. b) Gets rid of annoying popping and banging during decel and also when re-applying the throttle from closed. Dynojet says that my out of control 0% TPS 3000 RPM cell is likely shutting off the injector on decel and it has scaled my MAPs to the moon. 5” opening, and the billet tip is straight. For me at sea level, I get no popping or back firing on either roll on or decel. Some people do the PAIR mod (which disables the injection of air into the exhaust port during deceleration) to stop it. Discussion in 'Engine, Fuel and Exhaust' started by Doug S, Sep 12, is running a 45 low and 160 high and I do think the low is a little rich for it but maybe they put it in there to stop deceleration popping. 1 by Schrodingers Box. Mount the tuner to the top of the ECM under the seat. From cruisers to race bikes and everything in between, Doin' Bikes are the preferred choice for riders, Other Industry Specialists (GASD, Terry Hay's Shock Treatment) and Race teams including the Factory Yamaha Race Team, Cougar Honda. Extensive built in map database. I know it doesn't harm the bike, but considering the loud TAB exhaust, the popping is fairly loud, sometimes awkward. If the popping starts when the throttle is nearing 0% on the TPS you'll want to bump the VE slightly in the 0% and 2% columns as well as adding ignition advance. The PC uses original equipment style connectors, so no splicing or cutting of the harness is required. The other choice is the ECU reflash from Guhl Motors. When you add in the performance of the 2018 Benelli TNT. Joined Sep 5, 2008 · 3 Posts. " Tech tip: Power Commander Tips: Deceleration Pop. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. Any thing you do to the TUNE (Fuel & Timing) out the decal pop is a band aide not an actual fix. You dont need a dynojet kit for what you have fitted you can't even get one (as far as I know) for a UK spec FZS, there are some out there for other country specs FZS but these are to overcome a particular emission set ups. The End Of Popping, Spitting And Backfiring. The jet kit can be purchased through your local dealer. The tool given to adjust the mixture screw doesn't seem to be working right. The Fuelpak and the Fuelpak maps will. Have my Valk in the shop for a front fender replacement, and since I noticed some deceleration popping before it went into the shop, I've been reading through some of these tech topics and have learned that two of the primary causes of deceleration popping are loose header bolts and pilot screws needing re-adjusting. Decel Popping Causes & Solutions "Riley" Exhaust Mod (VTX 1800C) Alternate Exhaust Gaskets (VTX) Frame & Body. No popping on deceleration. Greatly reduced deceleration popping after open exhaust and X-pipe installs Throttle limiter from 6500+ removed entirely in all modes on 1200 bikes Recurved fueling based on Power Commander Maps and Dyno Testing. Using the PV-1 on a 2014 VRSCDX with Tab and K&N filter. I went ahead and changed both 2% and 5% columns to all zeros and it runs great again at the low throttle settings. If the popping starts when the throttle is nearing 0% on the TPS you'll want to bump the VE slightly in the 0% and 2% columns as well as adding ignition advance. Backfire upon deceleration. During deceleration, the fuel should be turned off for minimum emissions, but Harley does not seem to do that all the time, resulting in the infamous decel pop. Do not perform this operation with the engine running. If using with a DynoJet® or other aftermarket jet holders (emulsion tube) the threads will not match. My exhaust is a performance one, but not open (it is baffled), and I got an occasional decel pop. djm format as it has more data and is capable of more customization. If the slide diaphragm becomes pinched or is. i had lots of popping on decel and it was mostly because i didn't install the 02 eliminators:doh After that i increased some of the 0% throttle and that helped tremendously. As the voltage goes up the TPS sends a signal to richen the fuel mixture to the EFI controller. Harley-Davidson: 1. Use Velco, double-sided mounting tape or some other tools to mount the tuner on the ECM. Re: Deceleration Popping explained I am glad I read this, As you can see in my signature that I have a 91 XR250R. However, you may have to pull your carbs more than once to get things just right and some knowledge of speed tuning techniques, and/or help from a truly knowledgeable tuner. I owe a big thanks to @CraigB1960. 5 psi) and install our Zero Restriction inlet system and Spyder exhaust the bike will be leaner on cold start and will pop more on closed throttle decel. Secret of Engine Problem Diagnosis- Fuel Trims Pt. If it hasn't been done, back out your needle for the low speed jet about 2. Or would popping on decel be normal with that exhaust setup? Bike tops out at 95mph, when it could easily do 105 last year before i played with jets to get rid of popping. have now decreased the decel enleanment to 0. Dynojet's tech support was very helpful in the two instances that I needed some recommendations. Where as Keihin Carbs its recommended (if necessary) you change the Needle first. So, the popping you are hearing is not back-firing. Mostly the exhaust systems. I agree with MotoChris521, since your carb slide is down during decel the main and needle don't make a big difference. However all may not be lost as af1 have done some work on getting one to work and in their last post on the issue they were excited that they were further on than previous and getting somewhere. And I'd been reading that removing the smog gear helps alleviate the popping under deceleration. I could go out just alittle bit more, but i'm definitely happy. From the DynoJet website: Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. 1 by Schrodingers Box. translating to the best possible ride by eliminating deceleration pop and getting the perfect air-to-fuel ratio for your specific engine. power of [email protected] 4. Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. Yes, adjusting the pilot circuit richer will help reduce decel popping but it will also make the idle mixture too rich. As others have mentioned I am assuming in my answer that you are talking about after-firing (like popping on deceleration). glen · Registered. I spent good money to get my ideal setup and now I want to fine tune that. The decel on back fire is usally from a lean condition with the throttel shut. check the spark plug. 5 turns out on a fuel screw, a larger pilot jet will be needed. It goes on to say that high intake manifold vacuum from deceleration disables the PAIR system, to prevent afterburn (popping). First of all,the PCV works well,i can feel the power difference wtih different map uploading. I made a thread about decel popping, that also has a lot of information about the program. You may have to register before you can post: click the register link above to proceed. Discussion in 'Trading Tunes' started by Pig9r, 20050DynoFinalMap_TOR_CatBypass_Decel. Decel popping is caused by the detonation of unburned fuel in the exhaust pipe. A value of positive or negative 15-40 should be added and can reduce popping if it is still noticeable. No big Put an exhaust on my bike and the backfire is pretty loud. Now that the Muzzy map is loaded I can roll the throttle and release without any popping. With a Power Commander on your bike, it will run smoother, cooler and have better throttle response. anyone elses exhaust pop like this? just wondering i know my quads allways did a lil on decel when i downshifted but it was nuttin to worry bout on them. Sounds like you could use a Dynojet kit. It still has the VM26's, but they have been fitted with a Dynojet kit. 4 horsepower, whereas the 1250 Big Bore Kit provided 99. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. 8 rear-wheel Dynojet lb-ft, but not until 5000 rpm. ,running pro kurakyn hypercharger and cobra pro hp 2 into 1 exhaust ,was previosly running with v+h slippons,still the same issue,bike shop having issue resolving this. I have a stock '82 I just got, and I also replaced the air filters with pods and cut the pipes down (just cut the mufflers off, so the pipes end right below the pegs). I have a 2012 HD Softail Deluxe that has a significant backfire issue on deceleration. I have cells ranging from 120 to the 40's, and they say while there is no certain point where problems arise, this sort of range can lead to driveability problems and I should revert to an older AutoTune. we also take into account your riding habits and tune accordingly. After doing several dyno pulls I started leaning out both cylinders using the DynoJet power commander III software. power of [email protected] 4. After running it for a while, it had some decel popping so I moved the clip to 3 from the top. K&N premium powersports oil filters for the Suzuki DRZ400 are designed to improve oil flow while. any common jetting size pms etc for this issue would be appreciated. The base map had it set for -15 at 2% at 2000 rpm and eventually changed that to -52. Wow! Even better then the first tune. This happens with high flow exhausts that allow. I put 110 jet in the front carb and 108 in the rear. Dynojet Research is pleased to announce two new features for the Harley Davidson Power Commanders. 5 turns, i turned it up to 3 and did not help with the cackling. 2014 Battle of the Custom Kings - 3rd place nationwide "Street Bully". Discussion Starter • #1 • Jun 23, 2015. i put all the parts on at one time and ive just been making the mixture richer and richer seems to help a lil but ive allredy increased the lte map by 6 on each and every value and turned face buttons all the way up. The only difference between stock and the billet tip is increase from approx. When decelerating i would get a soft popping sound and the AFR would go past 15:1 like it should. It ran cooler than stock, gave me great MPG, and helped increase my power all at once. Its purpose is to prevent popping on decal by pumping a little gas in the carb. Yes, adjusting the pilot circuit richer will help reduce decel popping but it will also make the idle mixture too rich. 1:1 for most of the curve and when you look at the fuel portion of the PCV map, you can see how much fuel it takes out. Yes blocking the the pair valve hose or getting pair valve plates (get a kit that includes a connector so you don't get an engine light) will stop the popping on decel. And also the bike stalls when gearing down and coasting to a stop sign at times (never used to do that). The Tenere 700 Forum. No popping on deceleration. Ignition Timing / Spark Advance by: Michael Decipha Ponthieux Posted: 4-10-2011 it will most notably be present during decel, keep this in mind if you think you have a valve train issue as it could very well be over advanced idle spark or low load spark knock you can verify by pulling the spout or demanding much less timing in that specific. Popping during deceleration is caused by excess fuel being re-ignited in the exhaust system. I agree with MotoChris521, since your carb slide is down during decel the main and needle don't make a big difference. Backfiring on the other hand can sound like a shotgun going off with a big boom. i just bought a 2006 yfz 450 and i recently installed a fmf factory 4 full system, and a k&n intake with the lid off. Power commander V auto tune target afr's Discussion in ' I'm a bit confused as although I don't have stalling issues I'm wondering if AT can help with decel pop in the 0% column rather than inserting numbers in the fuel map through power commander. Definitely helps with the popping decel. 12 years of tuning experience. An open exhaust allows additional air to be “sucked up the pipe” during closed throttle and any unburned fuels, then ignite and “snap/crackle/pop”!. zip file contains the same map in 2 file formats – the older. Popping on decel Hello guys i have a problem, my 660 grizzly was idling kinda high and it was causing the atv to lurch forward whenever i put it in gear, so i was told to lower the idle screw, it cleared the problem right up, now though, i get a popping, sputtering, on deceleration. If I had to do it over again, I'd go the same route as I did the first time. Im thinking its a air induction system into the exhaust for emissions control. My jetting is a 25 pilot, dyno needle 3rd clip and a 165 dynojet main. 00 plus shipping. If you are tuning your BMW with any aftermarket solution tuner - you need these SAS block-off plates (available in our online SHOP). Try this first. This can be infuriating in turns as you go from throttle off to throttle on. Does not care weather you are cruising accelrating, decelerating, coasting, uphill, down hill, or even elavation changes. Most of what I've done to the bike since buying it is make it ready for distance rides and improved lighting. you should be able to run it to redline withno problems too much fuel can cause excess backfiring/ popping on decel. This happens with high flow exhausts that allow more fresh air to be pulled into the pipe, causing the exhaust temperature to rise and detonate any unburnt fuel. Also hab gerade mal regergiert was das für ein auspuff ist was Du schreibst Denke Du kannst S. Certified HD Master Technician. b) Gets rid of annoying popping and banging during decel and also when re-applying the throttle from closed. Honda CBR1000RR Superbike Package 188HP Dano's Performance has developed this Superbike Package for the 2008-16 Honda CBR1000RR. The ability to adjust your motorcycle's fuel map is vital if you have added a high-flow air filter, aftermarket exhaust system or smog block-off plates. In this video we talk about deceleration pop. The Power Commander is a fuel injection adjustment unit that plugs "inline" with the bike's stock ECU (electronic control unit). Sounds like the air/fuel mixture screw needs adjustmentthe carb/carbs probably need cleaninguse either the Seafoam or Sta-bil Ethanol fuel treatments when you fill up to help keep the fuel conditionedIf the bike has aftermarket pipes and the carb was not rejetted and air/fuel mixture was not adjuted it will pop. djm format as it has more data and is capable of more customization. 5 turns, i turned it up to 3 and did not help with the cackling. condition of deceleration pops is MUCH more noticeable and problematic. Harley-Davidson: 1. The carb holders are good, and The K&N's are clean, properly. Definitely helps with the popping decel. I installed a 126 jet (all jets used are Dynojet jets) and went for a ride. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. If you should need to tune the 0% column to combat popping on deceleration input values directly in the Fuel tables. It will start fine and idle perfect, but as soon as I touch the throttle it'll pop and backfire like crazy at the carb. Your pilot jet is too big if it doesn't die. 1 by Schrodingers Box. And with the map from Dynojet it was straight up backfiring more than just popping. I've got a dynojet jet kit from the PO. I seem to have my jetting correct, around 12-13 on the a/f meter. if your air fuel mix screw is beyond 2. Shop our complete selection of Harley-Davidson Motorcycle parts and accessories including the S&S Cycle Tuned Induction Air Cleaner Kit - 170-0087. A little popping on decel is normal. Dynojet will sell you a kit which includes adjustable needles, main jets, and instructions. also not being able to pull to 10k without a blubber. 6k RPM and max torque of [email protected] 3. Dave in TX: '01 W650- keeper '12 C5 military -sold '14 Continental GT- sold '06 Iron Barrel Bullet- Ace Clubman mods. Hey, Just installed the brock sidewinder and power commander. It can vary per the vehicle and modifications) Adds aggressive crackle and pop during deceleration letting off. anyone elses exhaust pop like this? just wondering i know my quads allways did a lil on decel when i downshifted but it was nuttin to worry bout on them. More room for tools. It isn't uncommon. Here too is usually a jetting issue, but can also be ignition timing OR even valve timing if they've been messed with. Hi, Bobg5757 popping or backfire on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. d) Throttle feels much smoother when re-applying from closed position. popping my vulcan has always popped a little on deceleration since the day I brought it home from the dealership im pretty sure some popping is normal since im all stock and the bike is still running well after 8 or 9 years that's aweful im questioning how long I've had the bike oh well its popped for ar least eight years and yes it does sound cool. Using my wide band o2 meter I would get a slight popping on deceleration with a 12. "Deceleration Backfiring" is the most common backfiring that occurs when you change down and throttle off. The Tenere 700 Forum. The popping is very uneasy on my nerves when the rpm’s drop from deceleration. I made a thread about decel popping, that also has a lot of information about the program. I got to where I was going and restarted after 6 hours and it was running very lean again. If at this time the air to fuel ratio is not perfect, popping or poor burning happens. I believe its a stock motor with the full yoshi pipe with the header and a uni air filter. The deceleration pop often clears up my re-mapping after several basic auto tune/re-map sessions depending on how you ride. Dependent on the bike and if you have swapped to an aftermarket air filter/exhaust set up you may need a flash tune or some. Jump to Latest Follow 1 - 10 of 10 Posts. My 450 grizz pops while going down steep hills on decel. Making sure your idle speed is set up to the 1500rpm recommended by Suzuki will help in reducing decel. except for this minor dilema the bike is wicked. 5 turns out. I have a significant amount of decel popping that I'm hoping to cut down. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. hex This is a custom tune for TORs/cat bypass with some fiddling to reduce decel popping. FM-019 Toll Free: 877-729-4754 2014 Harley Davidson Touring - 4 15. 5 and its got a nice rumble on decel now with maybe a pop 1 out of 10 times. for Lower rpm engines. He said I was trying to make it pop. I believe its a stock motor with the full yoshi pipe with the header and a uni air filter. Bike came with a PC V and I am currently running the canned tune from Dynojet for an Ankra 4-2-2 with very good results (no decel pop, "smooth" power throughout rpms) but will have a dyno/tune someday. The only thing similar that I've experienced (and perhaps this is what you are referring to) is the popping or 'spitting' sound that many (most?) TTR owners have during off-throttle deceleration, most noticeable during medium-slow speed engine braking. Joined Sep 5, 2008 · 3 Posts. Any guesses on a cause? Fresh premium fuel with no ethanol from a reputable station so I don't think that's an issue. djm format is the current PC3 map format and is used by all PC3's with a USB port. 5 on the 2 outside but the sizes are different by brand I think. My map is a combo of 14. Has your carb been apart? They have a deceleration valve on the left side with a small diaphragm and a tiny O ring in for the air passage. I seem to have my jetting correct, around 12-13 on the a/f meter. For older Magnetti Marelli fuel injected bikes, adjusting the fuel table to remove fuel can help reduce popping. stevefarris Having a blast on my 70HP+ Dynojet tuned 500R Trail Quad! Save Share. If you check a generic map at a properly equipped tuning center you will see that you bike will be rich in spots and lean in spots and you will have the dreaded decel popping. By EvolutionM - November 29, 2018. Sometimes you can tune it out and others not so much. If you feel your bike is running correctly: It will not hurt your motorcycle to put on the exhaust and give it a test run. The popping can be reduced, but if you richen the idle enough to make it go away completely the pilot circuit will be way too rich and the bike will burble and bog at 0 to 1/3 throttle. You may have to register before you can post: click the register link above to proceed. No decel popping, no lagging what so ever and it just seems the bike wants to do everything I ask with no hesitation. If it is an intake valve, it will backfire through the intake. RZR 1000 XP/ XP4; RZR 1000 XP/ XP4. Does the popping in that particular RPM range throw any flags or indicate any particular problem, or do you know what I may want to look at within my tune to alleviate this popping?. Replace leaking air cut-off valve for reduced popping on deceleration: Moose Carburator Rebuild Kit PIC: 18-0274: 87-07 KLR650 : 29. Ok, so I've got a 2000 400ex and it runs pretty well, the only thing is that on decel it has a lean pop. If bike is running great (idles great, power curve relatively smooth, no decel pop, etc. Thanks Bill. The sensor can be removed completely from the motorcycle if desired. 5:1 above 70%. The reason you do not hear this on a bike with a stock exhaust is due to the baffling of the stock exhaust. Fuel Moto video: Tuning for decel pop with Dynojet Power Vision. While the bike sounds better (to me), I'm getting backfiring on deceleration, and often at idle right after start up. Once I did this, I went and set most of my AFR targets for the autotune to 13. During deceleration, the fuel should be turned off for minimum emissions, but Harley does not seem to do that all the time, resulting in the infamous decel pop. Deceleration backfire tuning your deceleration backfire tuning your deceleration backfire tuning your deceleration backfire tuning your. who all here has yoshimura and what are you jetted at i'm noticing a little popping on decel from like 4ht/5th gear high rpms after i let off the gas, is that normal. Took it for a test ride and got decel pop from 3500 down to idle. DynoJet Training. 2008 DRZ400SM with Dynojet Jet Kit. Exhaust leaks can cause decel pop, make sure the exhaust is sealed completely at the motor, and at any other connections. So, it was pretty much spot on to what you said Bossy 70. - Popping or spitting through the carb occurs when the throttle is opened. About 400 miles on it, and it is stock. • If fuel mileage is a concern then you can alter the Target AFR values in the cruise range. Gas Detonation / Backfire on deceleration Discussion in 'Motorcycle Talk' started by Sentor, May 25, 2011. In any case, it's open-loop on deceleration. we also take into account your riding habits and tune accordingly. The ability to adjust your motorcycle's fuel map is vital if you have added a high-flow air filter, aftermarket exhaust system or smog block-off plates. When you are at a mid to high RPM and let of the throttle it will start to pop, this is the deceleration popping. 1 by Schrodingers Box. Kit includes everything you need to get rid of the pair valve system on your VTX1300, VTX1800, or VT1300/Fury Honda motorcycle. POPPING in the exhaust = lean condition. Dynojet Research is pleased to announce two new features for the Harley Davidson Power Commanders. 2014 Battle of the Custom Kings - 3rd place nationwide "Street Bully". Here too is usually a jetting issue, but can also be ignition timing OR even valve timing if they've been messed with. Dynojet recommends 2. Backfiring on the other hand can sound like a shotgun going off with a big boom. So, it was pretty much spot on to what you said Bossy 70. com Exhaust Popping on Deceleration. This has 100% cured the problem. It also would overheat quite easily in tight woods. Supposedly, the bike was jetted using a dyno, but some things seem goofy. 93 upper pulley and a good, safe custom tune (93 octane). This addition will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal chamber. DynoJet Training. Dyno jet did try about 12 months ago to get a power commander to work but due to the system couldnt get it to work correctly. Also, fix the speed, and put the speed limit to 300 mph. - The engine runs better in warm weather, worse in cool. 1994 750 magna popping on acceleration and deceleration. Throttle response is great and the whole driveability is vastly improved. The Tenere 700 Forum. If I had to do it over again, I'd go the same route as I did the first time. With a Power Commander equipped EFI bike you have more control over the fuel curve than with carburetion, i. It just like a light popping sound about like a hot rod cackle. The Rocket Ill Roadster is fitted with an electronic anti-lock brake system which is designed to prevent the wheels from lockingor skidding by reducing braking effort to the front or rear brake caliper when wheel lock is sensed. Bike averaged 42mpg and 235 degrees. After trying all the DynoJet maps, as well as one I tinkered with, I'm planning on leaving mine on the zero map until I get it dynoed (hopefully before May!). A value of positive or negative 15-40 should be added and can reduce popping if it is still noticeable. Save Share. Neither system helps nor hurts performance. I installed the cap into the bottom of air box and everything. I have a 2018 XP1000. Also, the fouling is dark black, dry, and looks like carbon to me. When I was leaving, the bikewas idleing a little high, 1150 RPM. Jump to Latest Follow I've looked at the plug chart and the plug looks "ok" to me but I'm still getting the popping on deceleration. This presupposes clean pilot circuits, correct fuel levels, decent sync, adequate clean fuel supply, and no air leaks. Daily Slideshow: This is one versatile desert-dwelling off-road machine with a venomous side. It also pretty much eliminates any decel pop from the pair valves. i kinda wish this thing. If you feel your bike is running correctly: It will not hurt your motorcycle to put on the exhaust and give it a test run. I took the exhaust off put and high temp silicone in all the joints. Exhaust popping on deceleration. Dynojet Power Commander V: Reduce decel popping by Dynojet Research, Inc. Exhaust gas, like a liquid, will follow a path with the least amount of resistance. Help me understand canned tune vs custom tune vs dyno tune If this is your first visit, be sure to check out the FAQ by clicking the link above. This is the #1 cause of deceleration popping (crackling). Dynojet remains committed to the needs of the Powersports and Dyno community. Ideally, don't waste time on the controller and just send off your ECU to be flashed. Maybe sould try a 44?? I had a dynojet kit in mine when i got it. Dynojet kits set them at 2. The Screamin’ Eagle® Pro Street Performance Tuner is designed to simplify management of engine operating parameters as performance modifications are made.
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