The Land Rover Range Rover / RR Sport D300 (3.0D) 300hp (2022 ->) produces 300bhp and 650Nm in standard form. Our Stage 1 ECU tuning file raises output to 335bhp and 710Nm, a gain of 35bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.