ENGINE · 2003-2013
M275 tuning
M275 — Mercedes 5.5 V12 biturbo (S65 AMG / SL65 / CL65 / Maybach 57S/62S). V12 twin-turbo SOHC 36v, 5.5 / 6.0 L, 604-720 HP (S65 AMG Black Series 670) stock. Cars: Mercedes-AMG S65 W221, SL65 R230, CL65 C216, Maybach 57S / 62S, S65 Black Series.
Engine specs
| Engine code | M275 |
|---|---|
| Configuration | V12 twin-turbo SOHC 36v |
| Displacement | 5.5 / 6.0 L |
| Production years | 2003-2013 |
| Stock power | 604-720 HP (S65 AMG Black Series 670) |
| ECU family | Bosch ME9.7 / MED17.7 → |
Tuning stages on M275
| Stage 1 | +50-80 HP |
|---|---|
| Stage 2 | +100-150 HP (downpipes + cat delete + intake + tune) |
| Stage 3 | +200+ HP (turbo upgrades — Renntech, Weistec, Kleemann) |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on M275
Common DTC codes on M275
Brands running M275
Workshop workflow
- Read the M275 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 ME9.7 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.