I believe my bike is too lean right now. When stock it backfired like crazy and at 500 miles i just put an fmf q4 and k&n filter on so i think its pretty lean cause the new pipe backfires like crazy. Im just wondering what damage could happen?
if ur bike is running Too Lean, it will grenade. Ka-Boom.
get the jetting dialed in, u will notice much better power gains compared to just slapping ur exhaust on and not changing the jets.
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