OK, it's time for me to replace my plugs. I have the motorcraft platinum plugs with the longer threads. They are pre-gapped at .054.
My question is:
With a Predator HP tune, advanced timing and premium fuel, should I alter the gap to be smaller or larger by any amount, or should I just check to make sure they are at .054 and plug-n-play?
My question is:
With a Predator HP tune, advanced timing and premium fuel, should I alter the gap to be smaller or larger by any amount, or should I just check to make sure they are at .054 and plug-n-play?