BMW 4 Gran Coupé-series M40i 374 hp — Stage 1 file (+46 hp)
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Stage 1 file for BMW 4 Gran Coupé-series M40i 374 hp
Target +0 hp. Custom development for your engine.
Chip tuning for BMW 4 Gran Coupé-series M40i 374 hp ECU
BMW 4 Gran Coupé-series (2019 - G24) M40i 374 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 374 to 420 hp (+46 hp, +12%) and torque from 500 to 580 Nm (+80 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. TCU units on this engine: ZF 8HPxx, ZF 8HPxx-Gen3 — each is calibrated with a separate file (torque limiter, shift maps for Stage 1). In the CHIPOK database: 4 configurations · 4 ECU variants. A 2019 petrol engine — the latest era of encrypted firmware; OBD access is available on production units, Bench on sport models.
M GmbH is BMW's performance division, building M engines since 1972. Third-party flash platforms are an industry of their own for the BMW community.
Top BMW engines confidently reach Stage 2 with a downpipe + intake + intercooler. Protection on top BMW models is the toughest in the group and requires Bench. Stage 1 on BMW usually stays within the standard timeframe, with no particular difficulty on the standard models. Top BMW engines sit at the power ceiling, and the gain is significant. A well-known base once hardware is added (downpipe + intake + intercooler). Bench reading is the standard procedure for top engines in modern models.
Top BMW models use a reinforced gearbox version that handles significant stock torque. The gearbox comes in versions by torque class, so its tolerance depends on the engine. Mini and FWD compacts use a different TCU platform with its own tooling base.
Frequently asked questions
What is the Stage 1 effect on the BMW 4 Gran Coupé-series M40i 374 hp?
Stage 1 for the BMW 4 Gran Coupé-series M40i 374 hp adds +46 hp — power increases from 374 to 420 hp (+12%). Torque rises from 500 to 580 Nm (+80 Nm).
What does a Stage 1 remap of the BMW 4 Gran Coupé-series M40i 374 hp include?
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 +46 hp with no hardware changes.
Does Stage 1 make sense on the BMW 4 Gran Coupé-series M40i 374 hp with this much power?
On the top-spec BMW 4 Gran Coupé-series M40i 374 hp engine, Stage 1 is the starting point before Stage 2 with a downpipe, intake and a larger intercooler. The mass-market factory calibration leaves substantial headroom for an aggressive software tune.
What is Stage 2 for the BMW 4 Gran Coupé-series M40i 374 hp?
Stage 2 for the BMW 4 Gran Coupé-series M40i 374 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 control units is the BMW 4 Gran Coupé-series M40i 374 hp built with?
The BMW 4 Gran Coupé-series M40i 374 hp comes with 2 ECU variants: Bosch MG1CS003, Bosch MG1CS201. Calibration is done for the specific unit after the revision is identified.
Can all the gearbox variants (ZF 8HPxx, ZF 8HPxx-Gen3) on the BMW 4 Gran Coupé-series be calibrated?
The BMW 4 Gran Coupé-series M40i 374 hp has 2 TCU variants: ZF 8HPxx, ZF 8HPxx-Gen3. Remapping the gearbox is essential after Stage 1 — the factory torque limiter is usually below what the engine can deliver.
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 M40i 374 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 M40i 374 hp cost?
The remap price for the BMW 4 Gran Coupé-series M40i 374 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.