BMW M5 4.4 V8 Bi-Turbo Competition 625hp Remap

The BMW M5 4.4 V8 Bi-Turbo Competition 625hp is a 4.4L turbocharged petrol engine producing 625 BHP and 750 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 735 BHP and 835 Nm — a gain of around 110 BHP (18%) and 85 Nm (11%).

This engine has moderate remap suitability, with gains weighted towards peak power — the improvement is most noticeable at higher RPM. The tuning headroom is classified as moderate, 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); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..

Considerations: Turbo petrol: fuel quality and cooling can influence repeatable performance.. 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.