The Audi Q8 45 TDI (3.0D) 231hp (2018 ->) produces 231bhp and 500Nm in standard form. Our Stage 1 ECU tuning file raises output to 350bhp and 720Nm, a gain of 119bhp and 220Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.