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Nice. I've always stuck with traditional copper plugs. #2 is a very interesting idea indeed. I'll do some testing later this summer, but I have a feeling I'll be stuck with narrow gaps since I'm going forced induction.
For now, I pulled a plug today (installed last year around this time @ 0.028. got 10k miles on them) and measured it to be 0.032. Not bad. At this rate, I can imagine these cheapo coppers lasting at least 30k miles.
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