Considering an ECU remap for your BMW X4 3.5i 306hp? A Stage 1 remap can take this F26 - 2014 - 2017 petrol engine from 306 BHP to 365 BHP and from 400 Nm to 520 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 X4 can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The BMW X4 3.5i 306hp is a 3.0L naturally aspirated petrol engine producing 306 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 365 BHP and 520 Nm — a gain of around 59 BHP (19%) and 120 Nm (30%).
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. at this torque level, transmission and driveline servicing history becomes especially important..
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 |
|---|---|---|---|---|---|
| 2.0i 184hp | 184 → 250 | +66 | 270 → 440 | +170 | Good (6.5/10) |
| 2.0d 190hp | 190 → 220 | +30 | 400 → 440 | +40 | Good (6.5/10) |
| 3.0d 211hp | 211 → 300 | +89 | 560 → 600 | +40 | Good (7.5/10) |
| 2.8i 245hp | 245 → 290 | +45 | 350 → 450 | +100 | Moderate (5.5/10) |
| 3.0d 258hp | 258 → 310 | +52 | 560 → 650 | +90 | Good (7/10) |
| 3.5d 313hp | 313 → 360 | +47 | 630 → 760 | +130 | Good (7/10) |
| M40i 360hp | 360 → 400 | +40 | 500 → 580 | +80 | Moderate (4.5/10) |
Get a personalised remap quote for your BMW X4. 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.
