RE: Spark plug gap.?
the spark plugs are Autolite XP Iridium .6mm finewire part # XP5263. ( the advance auto parts in middletown did not stock denso,or NGK.) The SRT-4 is an 05 with 6,000 miles and is bone stock. ( its my wifes car thats why there are no mods yet, but she will give in sooner or later.) The only reason I changed the plugs, is the car would skip or stumble on a cold start and if you put your foot into it at nomal speeds. It did not do this all the time . When I pulled the stock plugs they looked like new, no color on them (lean?) Thanks.