BMW CS Performance Flash — M2/M3/M4 G8x

Unlock the true performance potential of your BMW M3 or M4 with the CS Engine Tune DME Flash from BMW Customz.

This upgrade installs the official OEM CS calibration onto your vehicle’s DME, transforming the driving experience with increased power, sharper response, and enhanced exhaust character — all while retaining factory-level reliability and drivability.

✅ Features & Benefits:

Genuine OEM BMW CS software

Power increase to 530 HP / 650 Nm

Top speed limiter raised to 186 MPH / 300 KMH

Sharper throttle response

Enhanced exhaust sound & driving dynamics

Improved gearbox & torque delivery behaviour

Fully compatible with all regions and countries

No aftermarket maps or custom tuning files used

🔒 Safe & OEM-Compatible:

No ECU unlock required

No permanent modifications

No dealer tamper flags triggered

OEM-style operation and reliability

Compatible with future BMW software programming

We flash your G80 / G81 / G82 / G83 DME to the genuine CS calibration, delivering the authentic BMW CS driving experience with smooth daily usability and factory integration.

🔧 Compatibility:

2021 – 2027 BMW G80 M3

2021 – 2027 BMW G81 M3 Touring

2021 – 2027 BMW G82 M4 Coupe

2021 – 2027 BMW G83 M4 Convertible

Transmission: Automatic (AT)

📌 Supported on all software versions , including:

11/2025.30

11/2025.40

The flash can be carried out regardless of your current vehicle software version.