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Discussion Starter · #1 ·
I recently installed a dynojet kit on my foreman. here is the situation, cranks fine, idles fine, runs fine, until it gets in the upper rpm range, then its like it just runs out of breath. i installed this at the same time I put a hmf pipe on. low and mid range rpm the bike pulls hard as heck, but when it gets toward the top of rpm curve it begins to stall.
 

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Discussion Starter · #3 ·
I think its a lack of air. the jet installed its the one recommended by rd ynojet for an after market exhaust . I think on top end it is begetting enough air. gonna try a k n filter.
 

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If you think it's not getting enough air, take you air box lid off and test drive it like that and see if it runs better.
 
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