500 (5.5i) - 388ch Tuning
Mercedes S — Detailed power and torque gains by stage.
Gains by stage(4)
Power
388 hp
Torque
530 Nm
essence
Power
388→408ch
+20 ch
+5%
Torque
530→570Nm
+40 Nm
+8%
OriginalTuned
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Everything about 500 (5.5i) - 388ch tuning
Tuning the 500 (5.5i) - 388ch 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 500 (5.5i) - 388ch, tuning delivers up to +62 hp and +100 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 388 → 408 hp | 530 → 570 Nm | — |
| Stage 2 | 388 → 450 hp | 530 → 630 Nm | — |
| E85 Flexfuel | 388 → 388 hp | 530 → 530 Nm | — |
| E85+ | 388 → 408 hp | 530 → 570 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 500 (5.5i) - 388ch?
Tuning the 500 (5.5i) - 388ch (Mercedes S) delivers significant power and torque gains depending on the chosen stage. Stage 1, with no hardware modifications, offers the best gain-to-reliability ratio.
Is tuning reliable on the 500 (5.5i) - 388ch?
Yes, the 500 (5.5i) - 388ch is known for its reliability when tuned, especially at Stage 1. It's essential to use a certified tuner with maps tailored to your engine.
How much does Mercedes S tuning cost?
Prices vary by stage and tuner. Check our directory to compare rates from professionals near you.
Should I get a tuning box or an ECU remap?
ECU remapping (modifying the engine control unit map) delivers better results and integration than a plug-in tuning box. It's customized for each engine.
How do I find a tuner for my Mercedes S?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.