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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
stock or fmf pipe to break in new top end?
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[QUOTE="whenfoxforks-ruled, post: 1394251, member: 73147"] Put the pipe you want on, jet it, done. The stock jetting correction table should be fine for a start. Even if its lean, will not kill the engine for jetting! You correct it and continue. Till its broke in there is no need but to get the pilot and needle working crisp. Then check wfo when it clears out and the rings are seated. The pipe and silencer just swing the power delivery around and some slightly effect jetting. Altitude, temperature and barometric pressure influence your engine more than a bolt on, usually. There are some pipes, the sst for 1 on some YZ125's, can alter it enough to need higher octane fuel to prevent detonation though. Vintage Bob [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
stock or fmf pipe to break in new top end?
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