BHP+57 hp (35%)
Standard
163 hp
Tuned
220 hp
Torque+60 Nm (16%)
Standard
380 Nm
Tuned
440 Nm
Suitability
Good (7.5/10)Gains Profile
Power-focusedHeadroom
HighBMW 4 Series 420d 163hp ECU Remapping
Considering an ECU remap for your BMW 4 Series 420d 163hp? A Stage 1 remap can take this F32/33 - May/2016 - 2019 diesel engine from 163 BHP to 220 BHP and from 380 Nm to 440 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 4 Series can achieve.
How this engine compares
- 11thof 52 BMW 4 Series engines by power gain
- 84%of the 9,842 engines we hold gain data for see a smaller power increase
- 41%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW 4 serie 420d 163hp is a 2.0L turbocharged diesel engine producing 163 BHP and 380 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 220 BHP and 440 Nm — a gain of around 57 BHP (35%) and 60 Nm (16%).
This engine scores highly for 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 ECU is typically a Bosch EDC17 (likely), and the transmission is many variants use zf 8-speed automatic (where fitted); manuals also exist..
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.
Other 4 Series F32/33 - May/2016 - 2019 Engines
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