Stillen intakes tend to lean out the air/fuel ratio, every car that my tuner has seen that had the G3s installed ran a bit lean in the upper rev range. My car was no different, and even had some pinging (this is with Berk high flow cats as well). I had reset my ECU too and had been driving it for a month so fuel trims and timing should have been well set by then. I still recommend a tune, it will bring a nice jump in torque too while giving you piece of mind that your A/F ratio is perfect across the board.
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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob
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