BHP+33 hp (22%)
Standard
150 hp
Tuned
183 hp
Torque+60 Nm (18%)
Standard
330 Nm
Tuned
390 Nm
Suitability
Good (7.5/10)Gains Profile
BalancedHeadroom
HighBMW 3 Series 320D 150hp ECU Remapping
Considering an ECU remap for your BMW 3 Series 320D 150hp? A Stage 1 remap can take this E46 - 1998 - 2005 diesel engine from 150 BHP to 183 BHP and from 330 Nm to 390 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 3 Series can achieve.
How this engine compares
- 99thof 141 BMW 3 Series engines by power gain
- 52%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 3 serie 320D 150hp is a 2.0L turbocharged diesel engine producing 150 BHP and 330 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 183 BHP and 390 Nm — a gain of around 33 BHP (22%) and 60 Nm (18%).
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 ECU is typically a Bosch EDC15 (likely).
Considerations: 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
!Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Other 3 Series E46 - 1998 - 2005 Engines
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