Originally posted by cool 84
I agree with Red. I've gotten a ton of knock at high boost before I closed the plug gap down to .030. Got the same thing when I didn't press a plug wire all the way onto the plug. It ran fine up to about 17psi and then would knock like crazy no matter how much octane I had.
Yeah i agree with Red as well....i think i need to pull the plugs, check them and replace them.