Originally posted by Thunder racer
Yer i dont have a diffrent shims all i got is what comes with the engin.
What will happen if i just run it with the stock shim on 16%?
i am not to sure about if you run 16% with only the copper shim but i have no problem with 0.5mm shim at 30% nitro
you might want to drop a line for Dino to answer that.