The Land Rover Defender P400 (3.0T) 400hp (2019 ->) produces 400bhp and 550Nm in standard form. Our Stage 1 ECU tuning file raises output to 425bhp and 600Nm, a gain of 25bhp and 50Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.