BHP+30 hp (8%)
Standard
400 hp
Tuned
430 hp
Torque+35 Nm (7%)
Standard
500 Nm
Tuned
535 Nm
Suitability
Limited (3.5/10)Gains Profile
Limited headroomHeadroom
LowBMW M5 5.0 V8 400hp ECU Remapping
Considering an ECU remap for your BMW M5 5.0 V8 400hp? A Stage 1 remap can take this E39 - 1995 - 2003 petrol engine from 400 BHP to 430 BHP and from 500 Nm to 535 Nm of torque (naturally aspirated). This engine scores 3.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW M5 can achieve.
How this engine compares
- 8thof 9 BMW M5 engines by power gain
- 39%of the 9,842 engines we hold gain data for see a smaller power increase
- 20%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW M5 5.0 V8 400hp is a 5.0L naturally aspirated petrol engine producing 400 BHP and 500 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 430 BHP and 535 Nm — a gain of around 30 BHP (8%) and 35 Nm (7%).
This engine has limited 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.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. 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.
Considerations
!Naturally aspirated engine: gains are usually limited; results vary widely.
!High tuned torque: check transmission torque capacity and service history.
Technical Specifications
- Fuel Type