Dude, exhaust, FMIC, and a decent intake is enough to max out the stock maf and injectors on just the stock 14b. 12.8 is lean, this is another sign of this
I have a set of evo 560cc's off of my car...slap them in, you will be set! Dial back the MAF-T one or three clicks and it'll run like a kitten.
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