Considering an ECU remap for your BMW Z4 3.5i - N54 - 306hp? A Stage 1 remap can take this E89 - 2009 - 2018 petrol engine from 306 BHP to 370 BHP and from 400 Nm to 500 Nm of torque (turbocharged). This engine scores 7.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW Z4 can achieve.
The BMW Z4 3.5i - N54 - 306hp is a 3.0L turbocharged petrol engine producing 306 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 370 BHP and 500 Nm — a gain of around 64 BHP (21%) and 100 Nm (25%).
This engine scores highly for 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 5/6-speed automatics (where fitted); manuals also exist. at this torque level, transmission and driveline servicing history becomes especially important..
Considerations: Turbo petrol: fuel quality and cooling can influence repeatable performance.. High tuned torque: check transmission torque capacity and service history.
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 |
|---|---|---|---|---|---|
| 1.8i 156hp | 156 → 260 | +104 | 270 → 380 | +110 | Good (6.5/10) |
| 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 - 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.
