ENGINE · 2007-present
TDV8 4.4 tuning
TDV8 4.4 — Land Rover / Range Rover 4.4 V8 SDV8 diesel. V8 diesel twin-turbo, 4.4 L, 309-395 HP stock. Cars: Range Rover SDV8, Range Rover Sport SDV8, Discovery 4 / 5 SDV8.
Engine specs
| Engine code | TDV8 4.4 |
|---|---|
| Configuration | V8 diesel twin-turbo |
| Displacement | 4.4 L |
| Production years | 2007-present |
| Stock power | 309-395 HP |
| ECU family | Bosch EDC17CP55 / EDC17CP11 → |
Tuning stages on TDV8 4.4
| Stage 1 | +50-70 HP / +150-200 Nm |
|---|---|
| Stage 2 | +100-130 HP |
| Stage 3 | +150+ HP |
Conservative real-world estimates. Actual results depend on hardware health, fuel quality, ambient temperature, and the specific calibration written.
Services available on TDV8 4.4
Common DTC codes on TDV8 4.4
Brands running TDV8 4.4
Workshop workflow
- Read the TDV8 4.4 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 EDC17CP55 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.