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backfire

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when ever i go to a top of a gear (besides 1st) and let go of the gas my bike pops or backfires on me. i did get a uni air filter.could that effect it??? is it bad if it pops?? i heard it good be the jets.

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Most modern four strokes will pop under deceleration when running pump gas. As long as the bike pulls cleanly from bottom to top, don't worry about it.

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Yep my klx110 pops pretty good coming off of high rpm's, I run premium in it once in a while if I have some left over from my 450, it seems to run a little cleaner then.

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