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Installed a Vitesse throttle controller. May not change anything power wise, but even on SP3 it makes the throttle noticeably more responsive.
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2013 Silver 2SS RS M6. Kooks ceramic coated headers and HF cats, K&N CAI, Tuned by East Texas Musclecars.
2015 2500HD Crew Cab Duramax LTZ Z71 |