I'd be concerned with the power falling a bit at redline. The majority of the cars I have seen (mine included) with gen3's (or similar cai) all make power past 7500rpm, where yours seems to fall flat and die a bit. Just comparing to my dyno, with less mods, my car is pulling pretty much all the way to 8k.
I would think with your cai and headers that wouldn't be an issue. Could it be a tuning issue maybe?
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2010 Magnetic Black Metallic 370Z 6M
stillen gen 3 CAI - topspeed test pipes - invidia gemini CBE - UpRev tune
301whp (HP Logic Mustang Dyno)
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