1 step colder plugs?
NGK step 1 i believe are gapped at 0.044, step 2 are pregapped 0.029 .. they should be gapped according to use or vehicle specs, unless the pregapped setting is right for you then no need to gap it.. just be very very careful gapping it
Originally Posted by java09
yes run premium unleaded fuel!
i ran with stock plugs for awhile just change them out before you tune for sure!
i ran with stock plugs for awhile just change them out before you tune for sure!
hahahaha jk and ill tune a month or so after my install hopefully ill be safe
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