The Audi SQ8 4.0 TFSI 507hp (2019 ->) produces 507bhp and 770Nm in standard form. Our Stage 1 ECU tuning file raises output to 600bhp and 900Nm, a gain of 93bhp and 130Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.