Yup...:yes:if your running ac delco iridiums you are running ngk's they build them for delco
Snake oil... Kinda reminiscent of the Spit-crap.Check out a brand called Pulstar, i have heard these are some of the best
Ok for an all (or 90%) stock, emissions controlled, EFI daily driver that is intended to have an ULTRA HOT heat range plug.:yes:what about the Bosch Platium +2 ? are they any good? or any good even for a regular daily driver regular car?