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| Mechanics Corner Looking for answers to mechanical questions? Just can't get it to run right? Got a tip for increasing HP? This is your forum! |
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05-22-2008, 11:15 PM
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| Newbie  Join Date: Jan 2008
Bike: Yamaha WR450f/Ninja ZX12r
Location: St.Catharines,Ontario,Canada
Posts: 15
|  Backfire
Well here i am again.I'll refrase it.I have a 2003 WR 450f,great bike.I changed the pipe to an "FMF" because I like the sound and don t like my bike sounding like a sewing machine.I've adjusted the carb to run smooth and run 94 octane but still getting some backfire.Any ideas?My mechanic says he should rejet it some what which will cost me $100.00.Does this sound right to you?Any Help please...Buzz
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