Hey guys, just for my testing and curiosity. I want to test out running 40% nitro in a Nova keep off 7. I have one that has been used a bit but still in very good shape and is perfect for testing grounds. From stock I removed 1 shim to get a little more power. So right now I run 1 less shim than stock on 30% with a hot plug. What will I need to do to properly run 40% at this point? Should I add 2 shims and run a colder plug and test from there? I don't want any pre detonation most importantly. Any help would be greatly appreciated and I'll report back with the results

I know you guys would totally advise against this but I want to try it