The Audi A6 3.0 TDI Bi-Turbo 326hp (C7 - 2011 - 2018) produces 326bhp and 650Nm in standard form. Our Stage 1 ECU tuning file raises output to 380bhp and 800Nm, a gain of 54bhp and 150Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.