Originally Posted by rynoman03 For god's sake don't use Platinum or iridium plugs! Please read this thread... http://www.grandprixforums.net/f81/s...car-17482.html Iridium are fine if you don't want to change plugs every 15k like you should with copper. They won't break the car.
Last edited by SlowNA06; 09-09-2010 at 05:01 PM.
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