well,mickey dunlap said to try it with just the k&n drop in,and use a 160 main jet, i may try that at first,until i can afford to do some major mods,like the carb,cdi,clamp on , and walker evans,(or rezzi's) i might just wait until winter to do all of them , i am sick of having it in the shop with the nice weather outside, them idiots still havent put it together,i wish i knew more about working on my atv's ,