BHP+29 hp (20%)
Standard
143 hp
Tuned
172 hp
Torque+70 Nm (25%)
Standard
280 Nm
Tuned
350 Nm
Suitability
Good (7.5/10)Gains Profile
BalancedHeadroom
HighBMW 5 Series 525 TDS 143hp ECU Remapping
Considering an ECU remap for your BMW 5 Series 525 TDS 143hp? A Stage 1 remap can take this E39 - 1995 - 2003 diesel engine from 143 BHP to 172 BHP and from 280 Nm to 350 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
- 77thof 100 BMW 5 Series engines by power gain
- 38%of the 9,842 engines we hold gain data for see a smaller power increase
- 55%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 525 TDS 143hp is a 2.5L turbocharged diesel engine producing 143 BHP and 280 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 172 BHP and 350 Nm — a gain of around 29 BHP (20%) and 70 Nm (25%).
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: 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
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Other 5 Series E39 - 1995 - 2003 Engines
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