Considering an ECU remap for your BMW 1 Series 125i 231hp? A Stage 1 remap can take this F52 - 2018 -> petrol engine from 231 BHP to 270 BHP and from 350 Nm to 440 Nm of torque (naturally aspirated). This engine scores 5.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW 1 Series can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW 1 Serie 125i 231hp is a 2.0L naturally aspirated petrol engine producing 231 BHP and 350 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 270 BHP and 440 Nm — a gain of around 39 BHP (17%) and 90 Nm (26%).
This engine has moderate remap suitability, with gains weighted towards torque — you will notice the difference most strongly in mid-range pulling power and in-gear acceleration. The tuning headroom is classified as high, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 8-speed automatic (where fitted); manuals also exist..
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.. Unusually high gain for NA engine: treat as an estimate and verify against the exact engine variant.. High tuned torque: check transmission torque capacity and service history.. Large torque increase: drivetrain condition (clutch/gearbox) becomes more important at this level.
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 |
|---|---|---|---|---|---|
| 118i 136hp | 136 → 170 | +34 | 220 → 300 | +80 | Good (6.5/10) |
| 120i 192hp | 192 → 250 | +58 | 280 → 440 | +160 | Good (6.5/10) |
Get a personalised remap quote for your BMW 1 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.
