The Audi A6 2.7T 230hp (C5 - 1997 - 2004) produces 230bhp and 310Nm in standard form. Our Stage 1 ECU tuning file raises output to 315bhp and 480Nm, a gain of 85bhp and 170Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.