Expected gains of +43 BHP and +60 Nm torque
Get Your Free Quote ↓Data under review — The figures shown for this engine variant are currently being verified. They may be updated as we refine our data.
Considering an ECU remap for your BMW 1 Series 120i 177hp (1598cc)? A Stage 1 remap can take this F20 - 2015 - 2018 petrol engine from 177 BHP to 220 BHP and from 250 Nm to 310 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.
The BMW 1 serie 120i 177hp (1598cc) is a 1.6L naturally aspirated petrol engine producing 177 BHP and 250 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 220 BHP and 310 Nm — a gain of around 43 BHP (24%) and 60 Nm (24%).
This engine has moderate 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 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.
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 |
|---|---|---|---|---|---|
| 114D 95hp (1496cc) |
| 95 → 140 |
| +45 |
| 235 → 335 |
| +100 |
| Excellent (8.5/10) |
| 116i 109hp (1499cc) | 109 → 170 | +61 | 180 → 290 | +110 | Good (6.5/10) |
| 116D 116hp (1496cc) | 116 → 150 | +34 | 270 → 330 | +60 | Excellent (8/10) |
| 118i 136hp (1598cc) | 136 → 220 | +84 | 220 → 310 | +90 | Good (6.5/10) |
| 118i 136hp (1499cc) | 136 → 170 | +34 | 220 → 300 | +80 | Good (6.5/10) |
| 118D 150hp | 150 → 190 | +40 | 320 → 400 | +80 | Excellent (8/10) |
| 120D 163hp | 163 → 220 | +57 | 380 → 440 | +60 | Good (7.5/10) |
| 120i 184hp (1998cc) (B48B20B) | 184 → 260 | +76 | 290 → 420 | +130 | Good (6.5/10) |
| 120D 190hp | 190 → 220 | +30 | 400 → 440 | +40 | Good (6.5/10) |
| 125D 211hp (1995cc) | 211 → 270 | +59 | 450 → 500 | +50 | Good (7/10) |
| 125i 218hp | 218 → 270 | +52 | 310 → 440 | +130 | Good (6.5/10) |
| 125D 224hp (1995cc) | 224 → 270 | +46 | 450 → 500 | +50 | Good (7/10) |
| 125i 224hp | 224 → 270 | +46 | 310 → 440 | +130 | Good (6.5/10) |
| 135i 326hp | 326 → 395 | +69 | 450 → 530 | +80 | Moderate (5/10) |
| M140i 340hp | 340 → 400 | +60 | 500 → 600 | +100 | Moderate (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.