The Audi RS5 4.2 FSI 450hp (8T - 2010 - 2016) produces 450bhp and 430Nm in standard form. Our Stage 1 ECU tuning file raises output to 470bhp and 460Nm, a gain of 20bhp and 30Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.