The Audi A8 60 TFSI-e 449hp (D5 - 2016 ->) produces 449bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 500bhp and 800Nm, a gain of 51bhp and 100Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.