1Tlew0
03-21-2009, 08:24 PM
I bought a Pro circuit T-4 full exhaust system the other day, and i was wondering what main jet i should use??..i ran it today and it seems to run just fine....but i noticed when i was rappin threw third and fourth there was a little popping sounds almost like i was hitting the rev limiter..dunno if thats normal or not since this is my first quad and im learning things as i go...its an 05 450R...thanks if you can help me out..