Land Rover Defender P400 (3.0T) 400hp Remap

The Land Rover Defender P400 (3.0T) 400hp is a 3.0L turbocharged petrol mhev engine producing 400 BHP and 550 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 425 BHP and 600 Nm — a gain of around 25 BHP (6%) and 50 Nm (9%).

This engine has moderate remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.

From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted). at this torque level, transmission and driveline servicing history becomes especially important..

Considerations: High tuned torque: check transmission torque capacity and service history.

All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.