Must be the most vague question i have ever seen. What is your setup, what tune is in the ECU, how far is the tuner? Answer these questions and you might get some help.
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92 Infiniti G21 - 242 WHP & 182 Ft-LBs (Mustang Dyno) - NA 88mm 12.5:1 VE, N1 cams, Xcessive Intake, Q45 TB, Mazworx Header, 3" Exhaust, Nismotronic ECU on MAP and IAT. View The Build Here
well guy i put in the ecu and try starting the car it would not idle and would not rev out just alot of black smoke so its very rich my set up is a sr20det with 9:1 compression , s4 cams and a t28 gtir turbo and i have a n60 aif flow meter and gtir air flow meter