The Audi A6 2.7 TDI 163hp (C6 - 2008 - 2010) produces 163bhp and 450Nm in standard form. Our Stage 1 ECU tuning file raises output to 230bhp and 520Nm, a gain of 67bhp and 70Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.