BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp — Stage 1 file (+52 hp)

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Chip tuning for BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp ECU

BMW 4 Gran Coupé-series (2019 - G24) 30i (2.0T) EU6d 258 hp — premium petrol engine of the passenger segment of the BMW Group (Mini, Rolls-Royce, BMW Motorrad) group (Германия, 1916). Stage 1 chip tuning raises power from 258 to 310 hp (+52 hp, +20%) and torque from 400 to 500 Nm (+100 Nm). This engine ships with different ECU variants: Bosch MG1CS003, Bosch MG1CS201. The flashing method is determined by the specific unit: OBD, Bench or Boot mode. The ZF 8HPxx TCU is calibrated with a separate file — torque limiter and shift maps for Stage 1. In the CHIPOK database: 3 configurations · 3 ECU variants. A modern petrol engine built in 2019 — a generation with encrypted ECU protection (Tricore TPROT); top engines require Bench.

BMW's slogan is “Sheer Driving Pleasure”. The BMW petrol range spans the mainstream segment and the sporting M-series. High-output BMW turbo petrol engines deliver a solid gain with Stage 1 on stock hardware. The factory calibration on BMW petrol engines is conservative, leaving headroom for Stage 1 without hardware changes.

Protection on top BMW models is the toughest in the group and requires Bench. The BMW community is renowned for active tuning and a large pool of available Stage files. Stage 1 on BMW usually stays within the standard timeframe, with no particular difficulty on the standard models. High-output engines deliver a solid gain with Stage 1 on stock hardware. The BMW premium segment is a high-output platform with Stage 2 potential. The hardware headroom allows a confident move to Stage 1 without changing the turbo.

BMW's main gearbox is a modern multi-speed automatic. Mini and FWD compacts use a different TCU platform with its own tooling base. The TCU rarely needs recalibration up to Stage 1+, as the torque limiter usually copes with the Nm gain.

Frequently asked questions

How much does the power of the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp increase after Stage 1?

After Stage 1 the power of the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp rises from 258 to 310 hp, a gain of 52 hp (+20%). Torque rises from 400 to 500 Nm (+100 Nm).

How does Stage 1 differ from stock on the BMW 4 Gran Coupé-series?

Stage 1 is a software optimization of the factory ECU firmware of the BMW 4 Gran Coupé-series with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +52 hp with no hardware changes.

Do you need hardware changes for Stage 1 on the BMW 4 Gran Coupé-series?

The high-output BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp has a conservative factory calibration aimed at the mass market. Stage 1 unlocks the engine's real potential while turbo and injector life are preserved.

What is Stage 2 for the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp?

Stage 2 on the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

Which control units is the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp built with?

The BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp comes with 2 ECU variants: Bosch MG1CS003, Bosch MG1CS201. Calibration is done for the specific unit after the revision is identified.

What does remapping the ZF 8HPxx gearbox give on the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp?

The ZF 8HPxx TCU is calibrated separately: the torque limit is raised, the shift maps are optimized for the Stage 1 characteristics, and launch control is re-tuned. The TCU file is flashed separately from the ECU.

Does the factory warranty of the BMW 4 Gran Coupé-series remain valid after Stage 1?

After remapping the BMW 4 Gran Coupé-series, 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 BMW 4 Gran Coupé-series?

Reading and writing via OBD takes 25-30 minutes on the BMW 4 Gran Coupé-series. 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 BMW 4 Gran Coupé-series?

Before Stage 1 the original of the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp is read out and saved — returning to the factory state is possible at any time.

How much does chip tuning the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 hp cost?

The remap price for the BMW 4 Gran Coupé-series 30i (2.0T) EU6d 258 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: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno