Quote:
Originally Posted by Tpriest7893
Yeah I figured I would tune soon, and see how it runs and if it sucks I'll swap them. Did you go with stocks or the smaller gap?
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I tried NGK 97506 and several gap sizes (.20, .22, .24, etc.) and had issues with all. My car did not like those plugs and would studder/misfire at high speed under load. It drove me crazy trying to figure out what was going on. Finally I ordered stock Bosch plugs (stock gap) paired with PR coils and it runs perfect.
I know many have luck with the 97506 so i guess it may just depend on the car.