BMW 4 Gran Coupé-series 40i perf 360 hp — Stage 1 file (+60 hp)

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Chip tuning for BMW 4 Gran Coupé-series 40i perf 360 hp ECU

BMW 4 Gran Coupé-series (2014 - F36) 40i perf 360 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 360 to 420 hp (+60 hp, +17%) and torque from 500 to 580 Nm (+80 Nm). ECU — Bosch MG1CS003. Flashing method: OBD or Bench depending on the unit's protection. The ZF 8HPxx TCU is calibrated with a separate file — torque limiter and shift maps for Stage 1. In the CHIPOK database: 2 configurations · 2 ECU variants. The 2014 generation — mid-generation petrol ECUs (MEDC17/MEVD17/Simos PCR), OBD flash on production revisions.

The BMW community is one of the most active in Europe for chip tuning. A well-known base once hardware is added (downpipe + intake + intercooler).

The BMW community is renowned for active tuning and a large pool of available Stage files. Top BMW engines confidently reach Stage 2 with a downpipe + intake + intercooler. On older and mid-generation BMWs, Stage 1 is flashed over OBD without Bench. Bench reading is the standard procedure for top engines in modern 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).

BMW's main gearbox is a modern multi-speed automatic. The gearbox comes in versions by torque class, so its tolerance depends on the engine. The TCU rarely needs recalibration up to Stage 1+, as the torque limiter usually copes with the Nm gain.

Frequently asked questions

What is the Stage 1 effect on the BMW 4 Gran Coupé-series 40i perf 360 hp?

After Stage 1 the power of the BMW 4 Gran Coupé-series 40i perf 360 hp rises from 360 to 420 hp, a gain of 60 hp (+17%). Torque rises from 500 to 580 Nm (+80 Nm).

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

Stage 1 on the BMW 4 Gran Coupé-series 40i perf 360 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 +60 hp with no hardware changes.

What does Stage 1 give on the top-spec BMW 4 Gran Coupé-series 40i perf 360 hp?

Stage 1 for the BMW 4 Gran Coupé-series 40i perf 360 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 BMW 4 Gran Coupé-series 40i perf 360 hp?

Stage 2 on the BMW 4 Gran Coupé-series 40i perf 360 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.

What control unit does the BMW 4 Gran Coupé-series 40i perf 360 hp run?

The control unit of the BMW 4 Gran Coupé-series 40i perf 360 hp is the Bosch MG1CS003. Before flashing, the engineer identifies the exact revision and selects the write method.

Does the ZF 8HPxx transmission need calibration after Stage 1 on the BMW 4 Gran Coupé-series?

Remapping the ZF 8HPxx gearbox is essential to fully unlock Stage 1 on the BMW 4 Gran Coupé-series 40i perf 360 hp. Without a TCU update the factory torque cap will choke the torque gain and shifts will become noticeably softer.

Does Stage 1 void the warranty on the BMW 4 Gran Coupé-series?

Stage 1 on the BMW 4 Gran Coupé-series 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 BMW 4 Gran Coupé-series 40i perf 360 hp done?

The full remap cycle for the BMW 4 Gran Coupé-series — 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 BMW 4 Gran Coupé-series?

The original BMW 4 Gran Coupé-series 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 BMW 4 Gran Coupé-series 40i perf 360 hp?

The cost of Stage 1 for the BMW 4 Gran Coupé-series 40i perf 360 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: 30.08.2026 · Source: manufacturer technical documentation · Measurements: CHIPOK dyno