studbacker56
09-05-2004, 11:09 AM
ok i just got a HMF slip on for a honda 250x and i bought the 125 jet it said.didnt notice no power gains at all.so i went and bought a 130 and still no power gains. so i bought a 140 and moved the needle clip up one position and put it in and i noticed the 4HP power gains and the plug looked to me to be right. my question is does it seem right to go from a 122 main jet to a 140 main jet by just adding a slip on, header, and removed lid?? thats a hell of a jump. should i change the stock 32 pilot with that jump?? i also have a k&n filter, white brothers header, and removed air lid, and the slip on?