Mercedes GLC 400d (2.9) 330 hp — Stage 1 file (+70 hp)

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Chip tuning for Mercedes GLC 400d (2.9) 330 hp ECU

Mercedes GLC (2019 - X253) 400d (2.9) 330 hp — premium diesel 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 330 to 400 hp (+70 hp, +21%) and torque from 700 to 800 Nm (+100 Nm). This engine ships with different ECU variants: Bosch MD1CP001, 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 2019 diesel — a modern platform protected by RSA + checksum encryption; top models require BDM/JTAG.

Maybach is Mercedes's ultra-luxury sub-brand. 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'). Mercedes diesels have long been known for legendary reliability, with German taxi fleets running to million-kilometre mileages. Mercedes pioneered CDI (Common-rail Direct Injection) technology on passenger-car diesels, in series production since 1997. Mercedes diesels have long been popular with the German police and taxi services.

Stage 1 on Mercedes often requires refreshing the adaptations after the flash. On modern Mercedes, the encryption requires specialised Bench tools. In the Mercedes commercial segment, Stage 1 focuses on torque. On modern high-output Mercedes, Bench reading is often required because of the encryption. 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.

Frequently asked questions

How many horsepower does the Mercedes GLC 400d (2.9) 330 hp reach after a remap?

Stage 1 chip tuning on the Mercedes GLC 400d (2.9) 330 hp boosts engine output by 70 hp: from 330 to 400 hp. Torque rises from 700 to 800 Nm (+100 Nm).

What changes in the Mercedes GLC ECU after Stage 1?

Stage 1 chip tuning of the Mercedes GLC is a rework of the ECU maps: boost pressure, ignition advance, target lambda and the removal of factory torque limiters. The gain is +70 hp with no hardware changes.

Is Stage 1 safe on the high-output Mercedes GLC 400d (2.9) 330 hp?

Stage 1 on the powerful Mercedes GLC 400d (2.9) 330 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 much does Stage 2 add on the Mercedes GLC?

Stage 2 for the Mercedes GLC 400d (2.9) 330 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 ECUs are found on the Mercedes GLC 400d (2.9) 330 hp?

The Mercedes GLC 400d (2.9) 330 hp was fitted with different ECUs depending on the year and trim: Bosch MD1CP001, Bosch VGS3-NAG3. The write method (OBD, Bench, Boot) is determined when the unit is read.

What happens to the Mercedes GLC warranty after chip tuning?

The factory warranty of the Mercedes GLC 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 GLC take?

On the Mercedes GLC 400d (2.9) 330 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 GLC?

Yes, the original ECU firmware of the Mercedes GLC 400d (2.9) 330 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 GLC?

Stage 1 for the Mercedes GLC 400d (2.9) 330 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