With all of the supporting mods and proper tunes, an A6 C6 3.0T could push a whopping 400hp. For fun, we’ve seen C6 owners pushing 12-second quarter miles, which is extremely impressive for a luxury sedan. ECU Tune; Pulley(s) High Flow Throttle Body Inlet Hose; Heat Exchanger; Coilovers and Sway Bars; Audi A6 C6 Reliability. Is the Audi A6 C6 VW/Audi Crankshaft Turning Socket is used for turning the crankshaft pulley. Dual 1/2" Square drive & 22mm square drive with 12mm rotating pivot pin. Applications 2.4L, 3.2L & 4.2L FSI engines. Comparable to VW/Audi Factory Tool T40058. Whether tuning up your '68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the VkPhfr.