The Audi A6 35 TDI (2.0D) 163hp (C8 - 2018 ->) produces 163bhp and 370Nm in standard form. Our Stage 1 ECU tuning file raises output to 210bhp and 450Nm, a gain of 47bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.