Mercedes G 55 AMG (5.5i) 354 hp — Stage 1 file (+26 hp)

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Chip tuning for Mercedes G 55 AMG (5.5i) 354 hp ECU

Mercedes G (2000 - W463-II) 55 AMG (5.5i) 354 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 354 to 380 hp (+26 hp, +7%) and torque from 525 to 565 Nm (+40 Nm). ECU — Bosch ME2.8. Flashing method: OBD or Bench depending on the unit's protection. The 2000 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.

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. 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 G 55 AMG (5.5i) 354 hp increase after Stage 1?

After Stage 1 the power of the Mercedes G 55 AMG (5.5i) 354 hp rises from 354 to 380 hp, a gain of 26 hp (+7%). Torque rises from 525 to 565 Nm (+40 Nm).

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

Stage 1 on the Mercedes G 55 AMG (5.5i) 354 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 +26 hp with no hardware changes.

What does Stage 1 give on the top-spec Mercedes G 55 AMG (5.5i) 354 hp?

Stage 1 for the Mercedes G 55 AMG (5.5i) 354 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 does Stage 2 differ from Stage 1 on the Mercedes G 55 AMG (5.5i) 354 hp?

Stage 2 on the Mercedes G 55 AMG (5.5i) 354 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

What control unit does the Mercedes G 55 AMG (5.5i) 354 hp run?

The control unit of the Mercedes G 55 AMG (5.5i) 354 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 G?

Stage 1 on the Mercedes G 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 G 55 AMG (5.5i) 354 hp done?

The full remap cycle for the Mercedes G — 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 G?

The original Mercedes G 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 G 55 AMG (5.5i) 354 hp?

The cost of Stage 1 for the Mercedes G 55 AMG (5.5i) 354 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.

Last updated: 31.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno