Its possible the octane in Co hurts performance. It's also possible my milage has suffered from changing from Nissan oil to redline, but not THAT much... (-5MPG)
note: I tuned on a dyno for both CA and CO. (the tune actually hurt my MPG a little bit)
Also I have berk and JWT breather mods which should help.
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09 6spd Berk CBE, JWT cams, ZSpeed CSC, Stillen (25 row oil, brake cooling, sways, gen3 CAI), Passport (9500ci), Quaife LSD, Z1 400 hp kit, ss lines, pads, rotors, clutch etc, Phunk's pan and fuel starve fix
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