Zrussian13
Well-Known Member
The 6510s are your best bet even though you have to adjust the gap quite a bit. I tried two other cold plugs with tighter gaps to avoid having to adjust as much but the car definitely feels the best on the ngks.I don't have the kit, but have been following this thread a long while. If I ultimately keep my car (undecided) I'd definitely get this kit.
I read on here a many many pages ago about the ngk 6510's factory gap of .40 to .44 and that adjusting them down to the .28 or so is not advisable? Something to the effect of gapping over .10 on the ngk plugs factory setting isn't recommended or designed to be done safely,as well as them not being a colder plug even on an 18+
But I see everyone seems to be running them without issue.
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