This is a discussion on what spark plugs? within the Fox 5.0 Tuning forums, part of the 5.0 Tech category; im going to get my car dyno tuned. what plugs should i run the the combo in my sig?...
still gap it to what the stock gap was.. you don't want to gap it to much and have it come into contact with the cylinder... and don't want to do it too little to where it doesnt combust everything..