I have just purchest a new set of CPI inframes to replace my FMF fatties. About how much will the new pipes effect my jetting. The reason im asking is i only have 2 sizes bigger than what im runnig now and dont want to have to buy more jets for my stock carbs that i wont need when i get 33PWk's this winter. The bike is stock with v force 3's, no air box, noss head with 22cc domes, and +4 timeing plate. Also this winter i am going to build a 4mm cub motor will these pipes work well or should i have gotten Shearers. thanks