The Audi A6 45 TFSI (2.0T) 245hp (C8 - 2018 ->) produces 245bhp and 370Nm in standard form. Our Stage 1 ECU tuning file raises output to 320bhp and 450Nm, a gain of 75bhp and 80Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.