Mercedes CLK 500 (5.5i) 388 hp — Stage 1 file (+20 hp)
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Stage 1 file for Mercedes CLK 500 (5.5i) 388 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Mercedes CLK 500 (5.5i) 388 hp ECU
Mercedes CLK (2003 - W209) 500 (5.5i) 388 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 388 to 408 hp (+20 hp, +5%) and torque from 530 to 570 Nm (+40 Nm). ECU — Bosch ME9.7. Flashing method: OBD or Bench depending on the unit's protection. A petrol engine built in 2003 — 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. On older-generation Mercedes petrol engines, Stage 1 is flashed over OBD without Bench. The AMG 'one engineer, one engine' principle means each engine is built by a single craftsman whose signature appears on the plaque. Maybach uses Mercedes engines for the ultra-luxury segment, with the emphasis on quietness and smoothness.
The Mercedes community in Europe has a large pool of available Stage files for the standard models. AMG engines confidently reach Stage 2 with a downpipe + intake. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. AMG engines are a well-known base once hardware is added (downpipe + intake + intercooler). Brabus is a premium alternative to AMG for the top models. AMG Performance Studio is Mercedes's in-house tuning studio for bespoke projects. Bench reading is a mandatory procedure for modern AMG models.
Frequently asked questions
How much does the power of the Mercedes CLK 500 (5.5i) 388 hp increase after Stage 1?
Stage 1 chip tuning on the Mercedes CLK 500 (5.5i) 388 hp boosts engine output by 20 hp: from 388 to 408 hp. Torque rises from 530 to 570 Nm (+40 Nm).
What changes in the Mercedes CLK ECU after Stage 1?
Stage 1 chip tuning of the Mercedes CLK is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +20 hp with no hardware changes.
What is the Stage 1 potential of the Mercedes CLK 500 (5.5i) 388 hp?
On the top-spec Mercedes CLK 500 (5.5i) 388 hp engine, Stage 1 is the starting point before Stage 2 with a downpipe, intake and a larger intercooler. The mass-market factory calibration leaves substantial headroom for an aggressive software tune.
How much does Stage 2 add on the Mercedes CLK?
Stage 2 for the Mercedes CLK 500 (5.5i) 388 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.
Which ECU is fitted to the Mercedes CLK 500 (5.5i) 388 hp?
The Mercedes CLK 500 (5.5i) 388 hp ECU is the Bosch ME9.7. Production versions support OBD access; locked variants require Bench (BDM/JTAG).
What happens to the Mercedes CLK warranty after chip tuning?
The factory warranty of the Mercedes CLK does not remain valid after Stage 1 — the manufacturer withdraws its obligations once the ECU software is changed. CHIPOK provides its own warranty on its work and support.
How long does remapping the Mercedes CLK take?
On the Mercedes CLK 500 (5.5i) 388 hp: OBD flash 25-30 minutes, Bench (if required) about an hour. The file processing itself takes 5-30 minutes once the original bin is received.
Is the original file kept when chip tuning the Mercedes CLK?
Yes, the original ECU firmware of the Mercedes CLK 500 (5.5i) 388 hp is kept and can be flashed back at any time. Returning to stock via OBD takes 25-30 minutes.
What is the price of a Stage 1 remap for the Mercedes CLK?
Stage 1 for the Mercedes CLK 500 (5.5i) 388 hp is paid for with CHIPOK credits (1 cr = 1 €). The final amount is set in the calculator, taking the extra options (off functions) into account.