Audi S5 4.2L V8 OBD2 ECU Flash by VR Tuned VRTuned.com January 26, 2015 Product Info The VRTuned iFlash OBDII ECU tuner can tune many different vehicles via the OBDII interface that others cannot. This Audi S5 4.2L V8 came to us here locally in Arizona. Whether local or worldwide, we can...