yamaha qt

help,put straight pipe on 81 qt and now runs slower, what gives i have a k n filter on it

Re: yamaha qt

well, 2 strokes don't run well with straight pipes. it needs backpressure to run well.

Re: yamaha qt

thankz i herd all this talk about perf. exh. so i thought i could build 1, do u know if a 81 qt has a CDI

Re: yamaha qt

i am pretty sure all qts have a cdi. expansion chamber exhausts are the way to go; the vest one for the qt is made by Jemco. a lot of people on here with qts have a Jemco pipe and all have worked out so far.

Re: yamaha qt

when you reduce the back pressure you run lean,,,adjust your mixture screw,,,,turn inwards all the way and then back it out a quarter turn. should fix it.

spyder-

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