BHP+54 hp (17%)
Standard
326 hp
Tuned
380 hp
Torque+70 Nm (10%)
Standard
680 Nm
Tuned
750 Nm
Suitability
Good (6.5/10)Gains Profile
Power-focusedHeadroom
MediumBMW X4 M40d 326hp ECU Remapping
Considering an ECU remap for your BMW X4 M40d 326hp? A Stage 1 remap can take this G02 - 2018 -> diesel engine from 326 BHP to 380 BHP and from 680 Nm to 750 Nm of torque (turbocharged). 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 X4 can achieve.
How this engine compares
- 7thof 19 BMW X4 engines by power gain
- 81%of the 9,842 engines we hold gain data for see a smaller power increase
- 55%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW X4 M40d 326hp is a 3.0L turbocharged diesel engine producing 326 BHP and 680 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 380 BHP and 750 Nm — a gain of around 54 BHP (17%) and 70 Nm (10%).
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 moderate, based on the percentage gain available from the factory output.
From a technical perspective, the ECU is typically a Bosch EDC17 (likely), and 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: High tuned torque: check transmission torque capacity and service history.
Fuel economy note: possible improvement with conservative driving.
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.
Considerations
!High tuned torque: check transmission torque capacity and service history.