What RPM did it make the most power and where did u set your rev limiter....A graph would help ALOT. but i will tell u this...Ur exhaust needs the most work...
Ditch that crap ass DC (1 7/8" collector) for something with a 2.5" collector. An ITR would net some top end HP and a tri Y header (rage, hytech, SMSP)even more
b16's with their high R/S love to make power in the high RPM range so you need a bigger exhaust... 2.25" is choking u up man
Ur car would make lots more power with all that compression from PCT's
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