Discussion Starter · #1 ·
I had a hmf slip on with a uni-filter on a my bike and just recently put a sparks full exhaust on. It had 165 main and 42 pilot for the hmf. Got the sparks jet kit which comes with a 155,152 main 45 pilot. Put the 155 and the 45 in and the bike will not stay running will not idle runs like crap. So I put the 165 and the 42 back in. Still dont idle right and and when i rev up it pops and stuff. Do i need to go up a jet. Why is sparks recommending a small jet than a hmf slipon?