ENGINE · 2014-2020
S55 tuning
S55 — BMW M3/M4 F8x 3.0 twin-turbo. I6 twin-turbo direct injection, 3.0 L, 425-453 HP (Competition 444) stock. Cars: BMW M3 F80, M4 F82/F83.
Engine specs
| Engine code | S55 |
|---|---|
| Configuration | I6 twin-turbo direct injection |
| Displacement | 3.0 L |
| Production years | 2014-2020 |
| Stock power | 425-453 HP (Competition 444) |
| ECU family | Bosch MEVD17.2.G / MG1CS003 → |
Tuning stages on S55
| Stage 1 | +50-80 HP |
|---|---|
| Stage 2 | +100-130 HP |
| Stage 3 | +200+ HP (turbo upgrades, E85) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on S55
Common DTC codes on S55
Brands running S55
Workshop workflow
- Read the S55 ECU via OBD or bench using your existing flasher (KESS3, AutoTuner, MPPS, Trasdata, FRF).
- Open Softechpro V5 and drag the .bin / .ori / .hex / .s19 / .frf onto the workspace. The Bosch MEVD17.2.G variant is auto-detected.
- Pick the service tab and apply Stage 1 / 2 / 3 / DPF OFF / EGR OFF / AdBlue OFF as required.
- Save patched .bin — the TPROT + multi-block CRC32 is recomputed automatically.
- Flash via your existing flasher. Adaptation reset via OEM scan tool if required.