Customer Tune - Thomas Powers
By Perrin Performance
Thomas begged me for about a year to tune his car and I finally gave in a few weeks back, when I had some spare time. Thomas's 07 WRX, as far as drivetrain and engine parts, is a typical Stage 3 car with a TMIC, but it has a gearbox with the JDM RA gear set installed. The gearing of RA gear sets mak...
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