Mercedes SL 55 AMG (4.0T V8) 476 hp — Stage 1 file (+104 hp)

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Chip tuning for Mercedes SL 55 AMG (4.0T V8) 476 hp ECU

Mercedes SL (2021 - R232) 55 AMG (4.0T V8) 476 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 476 to 580 hp (+104 hp, +22%) and torque from 650 to 850 Nm (+200 Nm). This engine ships with different ECU variants: Bosch MED17.7.5, Bosch VGS3-NAG3. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 2 configurations · 2 ECU variants. A modern petrol engine built in 2021 — a generation with encrypted ECU protection (Tricore TPROT); top engines require Bench.

The Mercedes-Benz Group AG (Daimler AG until 2022) comprises Mercedes-Benz, AMG, Maybach, Smart and the EQ line. AMG is the performance division of Mercedes (since 1967), building engines on the 'one man, one engine' principle in Affalterbach. Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. Top AMG engines offer significant potential with a downpipe + intake. AMG is Mercedes's performance division (since 1967), acquired by Mercedes in 1999. The Mercedes petrol range spans compacts, premium saloons, SUVs, roadsters and AMG flagships.

Mercedes is one of the most protected brands in the chip tuning industry in terms of encryption. The AMG community is active in Germany, but the protection is the toughest in the industry, so Stage 1 on AMG usually requires Bench. The Mercedes community in Europe has a large pool of available Stage files for the standard models. 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 SL 55 AMG (4.0T V8) 476 hp increase after Stage 1?

After Stage 1 the power of the Mercedes SL 55 AMG (4.0T V8) 476 hp rises from 476 to 580 hp, a gain of 104 hp (+22%). Torque rises from 650 to 850 Nm (+200 Nm).

How does Stage 1 differ from stock on the Mercedes SL?

Stage 1 chip tuning of the Mercedes SL is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +104 hp with no hardware changes.

What is the Stage 1 potential of the Mercedes SL 55 AMG (4.0T V8) 476 hp?

Stage 1 for the Mercedes SL 55 AMG (4.0T V8) 476 hp unlocks the potential built in by the factory but artificially capped to meet mass-market targets. A base of 750-800 hp is achievable once hardware is added.

How much does Stage 2 add on the Mercedes SL?

Stage 2 on the Mercedes SL 55 AMG (4.0T V8) 476 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Which ECUs are found on the Mercedes SL 55 AMG (4.0T V8) 476 hp?

The Mercedes SL 55 AMG (4.0T V8) 476 hp was fitted with different ECUs depending on the year and trim: Bosch MED17.7.5, Bosch VGS3-NAG3. The write method (OBD, Bench, Boot) is determined when the unit is read.

What happens to the Mercedes SL warranty after chip tuning?

The factory warranty of the Mercedes SL 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 SL take?

On the Mercedes SL 55 AMG (4.0T V8) 476 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 SL?

Yes, the original ECU firmware of the Mercedes SL 55 AMG (4.0T V8) 476 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 SL?

Stage 1 for the Mercedes SL 55 AMG (4.0T V8) 476 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.

Last updated: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno