BHP+32 hp (20%)
Standard
163 hp
Tuned
195 hp
Torque+80 Nm (23%)
Standard
350 Nm
Tuned
430 Nm
Suitability
Good (7.5/10)Gains Profile
BalancedHeadroom
HighBMW 5 Series 525D 163hp ECU Remapping
Considering an ECU remap for your BMW 5 Series 525D 163hp? A Stage 1 remap can take this E39 - 1995 - 2003 diesel engine from 163 BHP to 195 BHP and from 350 Nm to 430 Nm of torque (turbocharged). This engine scores 7.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 5 Series can achieve.
How this engine compares
- 69thof 100 BMW 5 Series engines by power gain
- 51%of the 9,842 engines we hold gain data for see a smaller power increase
- 64%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW 5 serie 525D 163hp is a 2.5L turbocharged diesel engine producing 163 BHP and 350 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 195 BHP and 430 Nm — a gain of around 32 BHP (20%) and 80 Nm (23%).
This engine scores highly for remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the ECU is typically a Bosch EDC15 (likely).
Considerations: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
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
!High tuned torque: check transmission torque capacity and service history.
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.