i just put a hmf sport series series slip on with an fmf header pipe and now its running really bad and i know its my jetting but i dont know what to go up to, right now i have a 157.5 on there and its still bad.... hmf suggests 152 for just their pipe so im stumped, its running really hot and the header has alredy turned blue by the engine, i also have a k&n filter if that makes a difference, help plese!!!!