BHP+22 hp (6%)
Standard
343 hp
Tuned
365 hp
Torque+25 Nm (7%)
Standard
365 Nm
Tuned
390 Nm
Suitability
Moderate (4/10)Gains Profile
Limited headroomHeadroom
LowBMW M3 M3 343hp ECU Remapping
Considering an ECU remap for your BMW M3 M3 343hp? A Stage 1 remap can take this E46 - 1998 - 2005 petrol engine from 343 BHP to 365 BHP and from 365 Nm to 390 Nm of torque (naturally aspirated). This engine scores 4/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your BMW M3 can achieve.
How this engine compares
- 5thof 8 BMW M3 engines by power gain
- 25%of the 9,842 engines we hold gain data for see a smaller power increase
- 14%of engines with torque data see a smaller torque increase
Comparisons are calculated from our own recorded Stage 1 figures.
Assessment
The BMW M3 M3 343hp is a 3.2L naturally aspirated petrol engine producing 343 BHP and 365 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 365 BHP and 390 Nm — a gain of around 22 BHP (6%) and 25 Nm (7%).
This engine has limited remap suitability, though the available headroom is limited, so gains are modest compared to higher-output variants. The tuning headroom is classified as limited, based on the percentage gain available from the factory output.
Considerations: Naturally aspirated engine: gains are usually limited; results vary widely.
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
!Naturally aspirated engine: gains are usually limited; results vary widely.
Other M3 E46 - 1998 - 2005 Engines
| Engine | BHP | Gain | Torque | Gain |
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