420 CDI (4.0) - 320ch Tuning
Mercedes S: detailed power and torque gains by stage.
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Gains by stage(2)
Power
320 hp
Torque
730 Nm
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Stage 1 file for the 420 CDI (4.0) - 320ch
Send the ECU read, get back an optimised and tested file.
- Stage 1, Stage 2, E85
- Checksum corrected, original file kept
- For professionals only
Everything about 420 CDI (4.0) - 320ch tuning
Tuning the 420 CDI (4.0) - 320ch found in the Mercedes S is one of the most popular performance upgrades. This engine offers excellent potential for power and torque gains.
On ChiptuneMAP, find verified gain data for each stage, compare tuner prices and find the ideal professional for your project.
Gains summary by stage
On the Mercedes S 420 CDI (4.0) - 320ch, tuning delivers up to +80 hp and +170 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 320 → 360 hp | 730 → 820 Nm | On quote |
| Stage 2 | 320 → 400 hp | 730 → 900 Nm | On quote |