BHP+41 hp (20%)
Standard
204 hp
Tuned
245 hp
Torque+50 Nm (13%)
Standard
400 Nm
Tuned
450 Nm
Suitability
Good (6.5/10)Gains Profile
Power-focusedHeadroom
MediumBMW 1 Series 123D 204hp ECU Remapping
Considering an ECU remap for your BMW 1 Series 123D 204hp? A Stage 1 remap can take this E87 - 2007 - 2011 diesel engine from 204 BHP to 245 BHP and from 400 Nm to 450 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 1 Series can achieve.
How this engine compares
- 38thof 68 BMW 1 Series engines by power gain
- 69%of the 9,842 engines we hold gain data for see a smaller power increase
- 27%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW 1 serie 123D 204hp is a 2.0L turbocharged diesel engine producing 204 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 245 BHP and 450 Nm — a gain of around 41 BHP (20%) and 50 Nm (12%).
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 EDC16 (likely), and 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: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
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.