The Land Rover Range Rover / RR Sport 4.4 TDV8 313hp (2012 - 2018 (L405/L494)) produces 313bhp and 700Nm in standard form. Our Stage 1 ECU tuning file raises output to 390bhp and 820Nm, a gain of 77bhp and 120Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.