Lot of people told me to drop my pulley size to a 3.6", but what do I need to do to keep my 3.4" and stop KR. Ya its cold where Im from and I just got the new pulley, msd wires, and tune installed yesterday. Took it for a spin and all it does is flutter at 10psi from 50mph and up. I want it to stop not too smart with cars so thats why im asking. and no i havent scanned for KR but it never did anything of this before yesterday lol