Mercedes GLC 43 AMG (3.0T) 390 hp — Stage 1 file (+30 hp)

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Chip tuning for Mercedes GLC 43 AMG (3.0T) 390 hp ECU

Mercedes GLC (2015 - X205) 43 AMG (3.0T) 390 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 390 to 420 hp (+30 hp, +8%) and torque from 520 to 620 Nm (+100 Nm). This engine ships with different ECU variants: Bosch MED17.7.3.1, Bosch VGS3-NAG3. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. In the CHIPOK database: 4 configurations · 2 ECU variants. The 2015 generation — mid-generation petrol ECUs (MEDC17/MEVD17/Simos PCR), OBD flash on production revisions.

Mercedes-Benz is the world's oldest carmaker, founded in 1926 by the merger of Daimler-Motoren-Gesellschaft and Benz & Cie. 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. 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. Brabus is an independent Mercedes tuning house specialising in top-model upgrades.

The Mercedes community in Europe has a large pool of available Stage files for the standard models. Stage 1 on Mercedes often requires refreshing the adaptations after the flash. On Mercedes up to the recent generation, Stage 1 OBD flash is available. Top AMG engines sit at the Mercedes power ceiling, and the gain is significant. 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.

Frequently asked questions

How much horsepower does Stage 1 add for the Mercedes GLC 43 AMG (3.0T) 390 hp?

After Stage 1 the power of the Mercedes GLC 43 AMG (3.0T) 390 hp rises from 390 to 420 hp, a gain of 30 hp (+8%). Torque rises from 520 to 620 Nm (+100 Nm).

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

Stage 1 is a software optimization of the factory ECU firmware of the Mercedes GLC with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +30 hp with no hardware changes.

Does Stage 1 make sense on the Mercedes GLC 43 AMG (3.0T) 390 hp with this much power?

Stage 1 for the Mercedes GLC 43 AMG (3.0T) 390 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.

What is Stage 2 for the Mercedes GLC 43 AMG (3.0T) 390 hp?

Stage 2 on the Mercedes GLC 43 AMG (3.0T) 390 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Which control units is the Mercedes GLC 43 AMG (3.0T) 390 hp built with?

The Mercedes GLC 43 AMG (3.0T) 390 hp comes with 2 ECU variants: Bosch MED17.7.3.1, Bosch VGS3-NAG3. Calibration is done for the specific unit after the revision is identified.

Does the factory warranty of the Mercedes GLC remain valid after Stage 1?

After remapping the Mercedes GLC, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.

How long is the wait for a Stage 1 remap for the Mercedes GLC?

Reading and writing via OBD takes 25-30 minutes on the Mercedes GLC. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.

How do you roll back to the factory firmware of the Mercedes GLC?

Before Stage 1 the original of the Mercedes GLC 43 AMG (3.0T) 390 hp is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the Mercedes GLC 43 AMG (3.0T) 390 hp cost?

The remap price for the Mercedes GLC 43 AMG (3.0T) 390 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.

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