Quote:
Originally Posted by mweisdorfer
You are on stage 2+ on OEM plugs?
The rule of thumb I know is that you should use NKG step 1 colder plugs gapped at .022, when you go over 400hp.
I'd invest into Eldor Coils from FCP Euro. Get both from them. You'll get a lifetime warranty. Get free plugs every 15,000 miles for example.
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This is not true and is unnecessary.
Several people have commented to me in the past running stock OEM plugs on 500hp+ without issue.