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 Z4 1.8i 156hp? A Stage 1 remap can take this E89 - 2009 - 2018 petrol engine from 156 BHP to 260 BHP and from 270 Nm to 380 Nm of torque (naturally aspirated). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW Z4 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW Z4 1.8i 156hp is a 2.0L naturally aspirated petrol engine producing 156 BHP and 270 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 260 BHP and 380 Nm — a gain of around 104 BHP (67%) and 110 Nm (41%).
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 high, based on the percentage gain available from the factory output.
From a technical perspective, the transmission is many variants use zf 5/6-speed automatics (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.. 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 |
|---|---|---|---|---|---|
| 2.0i 163hp | 163 → 260 | +97 | 270 → 420 | +150 | Good (6.5/10) |
| 2.0i 184hp | 184 → 260 | +76 | 270 → 420 | +150 | Good (6.5/10) |
| 2.3i 204hp | 204 → 219 | +15 | 250 → 275 | +25 | Moderate (4/10) |
| 2.8i 245hp | 245 → 290 | +45 | 350 → 420 | +70 | Moderate (5/10) |
| 3.0i 258hp | 258 → 278 | +20 | 300 → 320 | +20 | Moderate (4/10) |
| 3.5i - N54 - 306hp | 306 → 370 | +64 | 400 → 500 | +100 | Good (7.5/10) |
| 3.5i - N55 - Twinscroll - 306hp | 306 → 350 | +44 | 400 → 520 | +120 | Good (7/10) |
| 3.5is - N54 - 340hp | 340 → 370 | +30 | 450 → 500 | +50 | Moderate (5.5/10) |
Get a personalised remap quote for your BMW Z4. 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.
