Mercedes CLK 55 AMG (5.5i) 347 hp — Stage 1 file (+20 hp)
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Stage 1 file for Mercedes CLK 55 AMG (5.5i) 347 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLK 55 AMG (5.5i) 347 hp ECU
Mercedes CLK (1998 - W208) 55 AMG (5.5i) 347 hp — premium petrol engine of the passenger segment of the Mercedes-Benz Group AG (Mercedes-Benz, AMG, Maybach, Smart, EQ) group (Германия, 1926). Stage 1 chip tuning raises power from 347 to 367 hp (+20 hp, +6%) and torque from 510 to 535 Nm (+25 Nm). ECU — Bosch ME2.8. Flashing method: OBD or Bench depending on the unit's protection. A petrol engine built in 1998 — the era before widespread firmware encryption, OBD flash without complications.
The Mercedes slogan is 'Das Beste oder nichts' ('The best or nothing'). Smart is Mercedes's city sub-brand, historically running Mitsubishi and Renault engines. Karl Benz is credited as the inventor of the automobile with the 1886 Patent-Motorwagen. The factory calibration on Mercedes petrol engines is conservative, leaving headroom for Stage 1. High-output Mercedes turbo petrol engines are the flagship models, and Stage 1 delivers a solid gain. On older-generation Mercedes petrol engines, Stage 1 is flashed over OBD without Bench.
The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Stage 1 on Mercedes often requires refreshing the adaptations after the flash. The Mercedes premium segment is a high-output platform with Stage 2 potential. High-output Mercedes engines are premium-class with solid headroom for Stage 1. On modern high-output Mercedes, Bench reading is often required because of the encryption.
Frequently asked questions
How much does the power of the Mercedes CLK 55 AMG (5.5i) 347 hp increase after Stage 1?
Stage 1 chip tuning on the Mercedes CLK 55 AMG (5.5i) 347 hp boosts engine output by 20 hp: from 347 to 367 hp. Torque rises from 510 to 535 Nm (+25 Nm).
What changes in the Mercedes CLK ECU after Stage 1?
Stage 1 on the Mercedes CLK 55 AMG (5.5i) 347 hp is a software ECU calibration with no hardware changes. The key maps (boost/ignition/lambda/torque) are adjusted while factory tolerances are preserved. The gain is +20 hp with no hardware changes.
What does Stage 1 give on the powerful Mercedes CLK 55 AMG (5.5i) 347 hp?
Stage 1 on the powerful Mercedes CLK 55 AMG (5.5i) 347 hp “lifts” the factory limiters with no hardware changes. The gain is noticeable in the mid and upper range. There is headroom left for moving to Stage 2 (downpipe + intake + intercooler).
How does Stage 2 differ from Stage 1 on the Mercedes CLK 55 AMG (5.5i) 347 hp?
Stage 2 for the Mercedes CLK 55 AMG (5.5i) 347 hp is Stage 1 plus hardware changes: a downpipe, a larger intake and a performance intercooler. The gain is considerably higher, but it requires professional component selection.
What control unit does the Mercedes CLK 55 AMG (5.5i) 347 hp run?
The control unit of the Mercedes CLK 55 AMG (5.5i) 347 hp is the Bosch ME2.8. Before flashing, the engineer identifies the exact revision and selects the write method.
Does Stage 1 void the warranty on the Mercedes CLK?
Stage 1 on the Mercedes CLK voids the factory warranty on the engine and transmission — this is standard for all manufacturers. CHIPOK provides its own warranty on the quality of the remap.
How quickly is chip tuning of the Mercedes CLK 55 AMG (5.5i) 347 hp done?
The full remap cycle for the Mercedes CLK — from reading to writing the final file — takes 30-90 minutes depending on the ECU access method. The file is prepared at CHIPOK in 5-30 minutes.
Can you return to stock after Stage 1 on the Mercedes CLK?
The original Mercedes CLK ECU is always saved before flashing. Rolling back to the factory firmware is done with the same programmer in 25-30 minutes.
How much does Stage 1 cost for the Mercedes CLK 55 AMG (5.5i) 347 hp?
The cost of Stage 1 for the Mercedes CLK 55 AMG (5.5i) 347 hp is calculated in the calculator on this page — you select the options (DPF off, EGR off, AdBlue off, DTC off, etc.) and the price is capped by the package Max Price. Payment is by credits (1 cr = 1 €), with no subscriptions.