The Audi S7 2.9 TFSI 450hp (2019 ->) produces 450bhp and 600Nm in standard form. Our Stage 1 ECU tuning file raises output to 540bhp and 780Nm, a gain of 90bhp and 180Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.