Originally Posted by
spenzalii
Here's a question. I have the Ninja .12 and ran it with 30% Mugen fuel. I added that shim under the head before it saw a drop of fuel. I am bumping down to 25%. Should I remove the shim and go with a #6 plug? ( I was running that hot #5, and had a #7 at one point but dind't have time to tune it)
im going down from 30 to 20 (yes i know you should not do this)and iv taken out the shim,
in my nova motors i ran 25 with out putting in a shim and it was ok.
30%is just to hard to tune in the cores of the day,
and now going down in nitro % the motor will probably be slow but it will run
ill just have to get another motor.