are the boost ones step 2 colder?
I love AFH![]()
are the boost ones step 2 colder?
I love AFH![]()
2001 Boosted Built k20a2 Billet BB 6766BB
2013=579whp 406trq @ 24 psi c16
10.87@137mph
2014= 510whp 370trq @ 18psi pump gas
2015= 7xx @ 30psi??
Exactly. These are the plugs the top tuners and racers use.
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