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TOPIC: Re:2008, fuel injected.. Backfires when decelerati Forum Tools Post New Topic Show latest posts Rules

#209283 mrsuznoz (User) Fresh Boarder Posts: 7 2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   I am a new owner and I had new cobra pipes put on. I have the 2008 roadstar s. 1700 fuel injected. I am not a motor guy so i really don't know what to do first to fix the backfire problem when decelerating. It seems to do it a little more when the motor is warm. Im not sure if it can be fixed or if there is something simple i can do myself. Please help if anybody knows what my first step should be. Thanks in advance. Matt   Logged     The administrator has disabled public write access. #209287 Curt (Moderator) Never to old to ride! Moderator Posts: 12514 Re:2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   Who put the pipes on a dealer or someone else? Do the pipes have a bung for the air sensor?   Logged     My Site Black Ice is Shiny, Black Ice is Deadly, Ya Wanna Ride My BlackIce?   The administrator has disabled public write access. #209298 DocShadow (Admin) Hmmmm .... send beer Admin Posts: 17615 Re:2008, fuel injected.. Backfires when decelerati 2 Years, 10 Months ago   Loud backfiring ...... exhaust leak ... check using incense. Popping in exhaust .... Do you still have the AIS connected. Doc   Logged     My Bike Website   The administrator has disabled public write access. #209299 mrsuznoz (User) Fresh Boarder Posts: 7 Re:2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   Dealer put em on, and as far as the bung, Im not sure what that is.. lol.. but I do know that the 02 sensor IS in place..   Logged     The administrator has disabled public write access. #209300 mrsuznoz (User) Fresh Boarder Posts: 7 Re:2008, fuel injected.. Backfires when decelerati 2 Years, 10 Months ago   AIS is the 02 sensor right? Yes it is connected..   Logged     The administrator has disabled public write access. #209304 DocShadow (Admin) Hmmmm .... send beer Admin Posts: 17615 Re:2008, fuel injected.. Backfires when decelerati 2 Years, 10 Months ago   AIS is not the O2 sensor ... sounds like you still have it on. If you don't have an exhaust leak then removing your AIS will eliminated the popping. Doc   Logged     My Bike Website   The administrator has disabled public write access. #209312 TampaSVT (User) Life is hard. It's harder if yer' stupid(J.Wayne) Platinum Boarder Posts: 4599 Re:2008, fuel injected.. Backfires when decelerati 2 Years, 10 Months ago   MrSuznoz: You'll want to remove the AIS system as soon as possible to get rid of the flame throwing effect. You can test it by plugging up the hoses and give it a run. You'll find that it will correct the issue. The bungs that Doc is talking about are welded into the exhaust pipes. There are two total. They should be installed in the new pipes. Rich   Logged     Last Edit: 2009/07/06 20:27 By TampaSVT.   2008 Road Star Tricky Air Ride(remote controlled) 6-degree Raked Front-end Ape Hangers w/Internal Throttle & Wiring RoadHouse Dooleys Bunch of chrome Online Album http://www.TampaSVT.com   The administrator has disabled public write access. #210230 gator1922 (User) Fresh Boarder Posts: 2 Re:2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   i have a 08 roadstar with 07 model cobra pipes. i left the o2 sensors out and put a power commander on it. i gained a lot of power, it sounds great and no backfiring once tuned right. the power commander lets you change the fuel map to a perfect match for your bike. it runs around $300.   Logged     The administrator has disabled public write access. #210263 skypilot (User) Fresh Boarder Posts: 5 Re:2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   Hi guys. New to the site, but I am having the same backfiring problem. I have a 2008 Roadie S. I put Cobra HP 2 into 1 pipes on; gain in performance, but backfiring a problem. Then installed a Power Commander. Cannot tell any change in performance and still backfires BAD on deceleration, except when it is cold. So far Power Commander was a big waste of money. Was told to increase air volume, (Yamaha tech) so I put a Hypercharger on. No change..... still backfires like a BIG DOG! Any help/suggestions would be appreciated. Thanks. Skypilot   Logged     The administrator has disabled public write access. #210272 Road_Hawg (User) Platinum Boarder Posts: 1397 Re:2008, fuel injected.. Backfires when decelerating 2 Years, 10 Months ago   skypilot wrote: Hi guys. New to the site, but I am having the same backfiring problem. I have a 2008 Roadie S. I put Cobra HP 2 into 1 pipes on; gain in performance, but backfiring a problem. Then installed a Power Commander. Cannot tell any change in performance and still backfires BAD on deceleration, except when it is cold. So far Power Commander was a big waste of money. Was told to increase air volume, (Yamaha tech) so I put a Hypercharger on. No change..... still backfires like a BIG DOG! Any help/suggestions would be appreciated. Thanks. Skypilot Remove the AIS   Logged       The administrator has disabled public write access.

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