stock bottom end, gt40s, cobra intake, stock cam, ts67, and soon to be on 12lbs of boost. Im running the autolite plug thats stock for a cobra and its probably not the best choice. What kind of plug should I get before I raise the boost?
that doesn't really help much when the jack asses at the parts store dont know what is colder or hotter. I would like to run a non-projected tip ngk plug, anyone know the part number for what im needing?