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cutting out

  1. 08 kfc 450r cutting out lower rpm 1st - 5th

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    i have a 08 kfx 450r with a yoshi comp full exhaust, k&n air filter, and everything else is stalk. a buddy and i went out riding and once the engine got warm i noticed it cutting out, and sputtering. once i got past half throttle it would come out of it and run fine. i stopped and it was still...
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