Quote:
Originally Posted by sperry
As far as I know, there is one and only one choice for colder STi plugs: NGK LFR-7AIX. And when I say "one and only one" I don't mean that 'cause they're great plugs, I say that because they're the *only* one step colder plugs for the STi, period.
Personally, I'd rather run a set of $4 copper plugs and change 'em frequently, but they just don't make 'em for the STi heads.
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I have to check, but I believe that is what I'm running.
I think there are other options out there, but nobody who tunes these cars will touch anything else.
And I am very happy not having to go to the trouble of checking/changing them often.