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Old 11-06-2012, 08:46 PM   #27
Joined: Sep 2012
Location: Suwanee, GA
Oddometer: 70
Originally Posted by fastdirt505 View Post
Mine definitely backfires under 5k rpm with the throttle closed. I have my spark arrestors out of the FMF pipes which makes it worse. I have to decide if I want heads to turn when downshifting to a stop or not. If I don't want the attention I just pull in the clutch or you can give the throttle just a slight turn to silence the pops. The bike runs great but backfires.

I just recently installed the CPR intake and CJ Designs jetting and all the backfiring went away. I am still running the FMF pipes without the inserts. I guess my bike wasn't jetted correctly coming from Florida to Georgia, although it ran fine it backfired. Now the backfiring is gone.
Erzberg SE 950R and a KTM 250SX
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