ENGINE · 1985-2010
MWM 6.12 / 4.12 tuning
MWM 6.12 / 4.12 — Brazilian / South American light truck diesel. I4 / I6 diesel turbo (older mechanical pumps), 4.2 / 6.2 L, 120-225 HP stock. Cars: VW Constellation, Iveco Daily 4x4 / 4x4 (Brazil/Argentina market), Agrale Marrua.
Engine specs
| Engine code | MWM 6.12 / 4.12 |
|---|---|
| Configuration | I4 / I6 diesel turbo (older mechanical pumps) |
| Displacement | 4.2 / 6.2 L |
| Production years | 1985-2010 |
| Stock power | 120-225 HP |
| ECU family | Mechanical injection (older) → EDC17C49 (newer) → |
Tuning stages on MWM 6.12 / 4.12
| Stage 1 | +30-45 HP / +100-150 Nm |
|---|---|
| Stage 2 | +60-80 HP |
| Stage 3 | +100+ HP |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on MWM 6.12 / 4.12
Common DTC codes on MWM 6.12 / 4.12
Brands running MWM 6.12 / 4.12
Workshop workflow
- Read the MWM 6.12 / 4.12 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 Mechanical injection (older) → EDC17C49 (newer) 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.