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I wouldn't use an iridium projected tip plug with any amount of nitrous on a H/C/I car, even a lil 100 shot. Use a NGK br7ef ("TR7"), they are non projected tips and 2 heat ranges colder than stock.
thanks for the insight. but what about on an NA car. (i wont be spraying again any time soon) any gap recommendation for it? its been a long time since i have had plugs in there gapped for na