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BMW M3 4.0 V8 420HP
Technical Specifications
Power hp
Torque Nm
Power Graph
BMW M3 4.0 V8 420HP: da 420 a 440HP
Remapping BMW M3
MasterTuning is a leader in developing remapping for BMW. La BMW M3 4.0 V8 420HP può passare da 420 HP a 440 HP con un incremento di 20 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 4.0 V8 420HP
The BMW M3 4.0 V8 420HP is equipped with a petrol engine that produces 420 HP and 400 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this BMW can achieve 440 HP (+5%) and 430 Nm (+8%).
Our Stage 1 tuning for the M3 E90 - 2005 - 2011 delivers an impressive gain of +20 HP and +30 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code S65B40A identifies this specific powerplant configuration. The Siemens/Continental MSS60 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 420 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 4.0 V8 420HP
Factory technical data for the BMW M3 4.0 V8 420HP (E90 - 2005 - 2011), used by MasterTuning engineers to develop a tailored, dyno-tested remap for this specific powerplant.
| Engine code | S65B40A |
|---|---|
| ECU / Control unit | Siemens/Continental MSS60 |
| Fuel | Benzina |
| Compression ratio | 12.0 |
| Bore × stroke | 92.0 X 75.2 mm |
| Stock power | 420 HP · 400 Nm |
| Remapped power (Stage 1) | 440 HP (+20) · 430 Nm (+30) |
Frequently Asked Questions - BMW M3
How much power can I gain from remapping my BMW M3?
With MasterTuning Stage 1, your BMW M3 4.0 V8 420HP can gain +20 HP (from 420 to 440 HP) and +30 Nm of torque. This represents a 5% increase in power.
Is ECU remapping safe for the BMW M3 engine?
Yes, MasterTuning's remapping for the BMW M3 4.0 V8 420HP is developed within safe parameters. All calibrations are tested on our 4x4 dyno and stay within the mechanical limits of the S65B40A 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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