55 AMG (5.5i) - 422ch Tuning
Mercedes SLK — Detailed power and torque gains by stage.
Gains by stage(4)
Power
422 hp
Torque
540 Nm
essence
Power
422→450ch
+28 ch
+7%
Torque
540→570Nm
+30 Nm
+6%
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Everything about 55 AMG (5.5i) - 422ch tuning
Tuning the 55 AMG (5.5i) - 422ch found in the Mercedes SLK 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 SLK 55 AMG (5.5i) - 422ch, tuning delivers up to +78 hp and +90 Nm depending on the stage. Stock vs tuned figures:
| Stage | Power | Torque | Indicative price |
|---|---|---|---|
| Stage 1 | 422 → 450 hp | 540 → 570 Nm | — |
| Stage 2 | 422 → 500 hp | 540 → 630 Nm | — |
| E85 Flexfuel | 422 → 422 hp | 540 → 540 Nm | — |
| E85+ | 422 → 450 hp | 540 → 570 Nm | — |
Frequently asked questions
What gains can I expect from tuning the 55 AMG (5.5i) - 422ch?
Tuning the 55 AMG (5.5i) - 422ch (Mercedes SLK) 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 55 AMG (5.5i) - 422ch?
Yes, the 55 AMG (5.5i) - 422ch 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 SLK 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 SLK?
Use the ChiptuneMAP directory to find a certified tuner near you. Compare reviews, prices and specialties.