umm i made all my dyno passes up to 459rwhp with stock 7's and 9's . so i'm not sure how necessary changing the plugs are

Well, if I can get the same perfomance out of a plug that costs less than half of what I was paying for the BUR9's, why not?

Ive never seen that, what did you gap them to?


FYI - there are guys in KC, MO running 11s on these plugs.

I gapped them to where the .022 would fit but the .024 wouldn't.

I gap mine at .30 but I think boost matter in that equasion.