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Spark Plugs for APR Stage 2?

Last year I ran the NGK 7437-8 plugs with my APR Stage 2 (v 2.4) and I never really liked them. Idle was lousy, and just always felt "not right" to me. After about 13k I changed to Brisk ER12S, and I like them much better. Upgraded to flash v 2.8 (more timing I think) and still feels great. Even if they only last 10k it's well worth it. And they're cheap.


Passed Driver's Ed
Lexington, KY
With an APR Stage 2 tune I think they recommend the colder NGK 7437-9, or so I've read from a APR within the last week or so..
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