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Old 10-30-2012, 12:01 PM   #22
fastdirt505
Adventurer
 
Joined: Sep 2012
Location: Suwanee, GA
Oddometer: 70
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.
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Brian
Erzberg SE 950R and a KTM 250SX
http://www.youtube.com/fastdirt505
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