Considering an ECU remap for your BMW M3 M3 321hp? A Stage 1 remap can take this E36 - 1991 - 1998 petrol engine from 321 BHP to 350 BHP and from 350 Nm to 380 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW M3 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW M3 M3 321hp is a 3.2L naturally aspirated petrol engine producing 321 BHP and 350 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 350 BHP and 380 Nm — a gain of around 29 BHP (9%) and 30 Nm (9%).
This engine has limited 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 limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
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 |
|---|
| M3 286hp | 286 → 306 | +20 | 320 → 345 | +25 | Moderate (4/10) |
Get a personalised remap quote for your BMW M3. 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.
