Considering an ECU remap for your BMW 5 Series 525 TD 115hp? A Stage 1 remap can take this E34 diesel engine from 115 BHP to 140 BHP and from 245 Nm to 285 Nm of torque (turbocharged). This engine scores 7/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 5 Series can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW 5 serie 525 TD 115hp is a 2.5L turbocharged diesel engine producing 115 BHP and 245 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 140 BHP and 285 Nm — a gain of around 25 BHP (22%) and 40 Nm (16%).
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 ECU is typically a Bosch EDC17 (likely).
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.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 524 TD 115hp |
| 115 → 140 |
| +25 |
| 220 → 262 |
| +42 |
| Excellent (8/10) |
| 525 TDS 143hp | 143 → 175 | +32 | 260 → 330 | +70 | Good (7.5/10) |
Get a personalised remap quote for your BMW 5 Series. We'll connect you with a trusted professional in your area.
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 before proceeding.
