Originally Posted by speed6

Dear all I have a Novarossi .12 PT with a Capricorn muffler kit EFRA2662 and really wish to tame a bit more the bottom end.
Basically we have a track with lots of Chicanes so can't have the rear all over the place due to much power once I hit the throttle.
I have already tried a higher 1st to reduce the punch and my clutch gap is .30 with med spring but engine still rips the tires.

Any suggestioms