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BMW M3 m3 343HP
Technical Specifications
Power hp
Torque Nm
Power Graph
BMW M3 m3 343HP: da 343 a 365HP
Remapping BMW M3
MasterTuning is a leader in developing remapping for BMW. La BMW M3 m3 343HP può passare da 343 HP a 365 HP con un incremento di 22 HP.
The development of each remap is customized by MasterTuning.
- 100% tested and customized files guarantee
- Tested and developed on a 4x4 dyno
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details BMW M3 m3 343HP
The BMW M3 m3 343HP is equipped with a petrol engine that produces 343 HP and 365 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this BMW can achieve 365 HP (+6%) and 390 Nm (+7%).
Our Stage 1 tuning for the M3 E46 - 1998 - 2005 delivers an impressive gain of +22 HP and +25 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code 326S4 identifies this specific powerplant configuration. The Siemens/Continental MSS52 / Siemens/Continental MSS54 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 343 HP from factory, this BMW M3 is already a performance vehicle. Our remapping extracts even more potential, delivering exhilarating acceleration and enhanced driving dynamics for enthusiasts who demand the best.
Technical Specifications — BMW M3 m3 343HP
Factory technical data for the BMW M3 m3 343HP (E46 - 1998 - 2005), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | 326S4 |
|---|---|
| ECU / Control unit | Siemens/Continental MSS52 / Siemens/Continental MSS54 |
| Fuel | Benzina |
| Compression ratio | 11.5 |
| Bore × stroke | 87.0 X 91.0 mm |
| Stock power | 343 HP · 365 Nm |
| Remapped power (Stage 1) | 365 HP (+22) · 390 Nm (+25) |
Frequently Asked Questions - BMW M3
How much power can I gain from remapping my BMW M3?
With MasterTuning Stage 1, your BMW M3 m3 343HP can gain +22 HP (from 343 to 365 HP) and +25 Nm of torque. This represents a 6% increase in power.
Is ECU remapping safe for the BMW M3 engine?
Yes, MasterTuning's remapping for the BMW M3 m3 343HP is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the 326S4 engine.
Is the BMW ECU remapping reversible?
Absolutely. The original factory calibration of your BMW M3 is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my BMW warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
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