BootMod3 BM3 S58 ECU OBD Flash Tune Licence BMW G80/G81 M3, G82/G83 M4, F97 X3M & F98 X4M (incl Competition) Stage 1/2 OTS Maps, E30/Race Fuel, Map Switching UK Support

BM3 licence for S58-powered BMWs with UK-based help and install

Give your S58 a serious software upgrade with the BM3 calibration licence. Flash your engine control unit through the OBD port in minutes and enjoy sharper response, stronger mid-range and silky-smooth drivability. No ECU bench unlock, no drama, just proven calibration and full control from your phone, tablet or laptop.

We run this software on our own cars and our customers love it. The power delivery is ultra consistent, throttle feel is transformed and the app makes setup simple. If you want a dependable ECU software key for your M car with proper UK support, this is the one.

Compatible models

• G80 and G81 M3 including Touring and Competition
• G82 and G83 M4 including Coupe and Convertible Competition
• F97 X3M including Competition
• F98 X4M including Competition
• All S58 variants listed above

Highlights

• Flash at home via OBD using an ENET style cable or optional WiFi Agent
• App and web access for iOS, Android and desktop with secure cloud storage
• Pre-calibrated Stage 1 and Stage 2 files for stock or bolt-on hardware
• E30 blend and high-octane race fuel options, plus upgraded turbo support
• Quick profile change for daily, spirited and track use
• Live data logging with easy sharing for review and optimisation
• Full diagnostics with code read and clear across multiple modules
• Gauges and real-time monitoring in the Live Dash
• Revert to the factory map at any time

Performance-focused features

• Vmax limiter removal
• Customisable overrun sound control
• Exhaust valve management
• Cold-start noise reduction options
• CEL suppression for decat downpipes for off-road and motorsport only
• Ethanol E30 calibration support and race gasoline strategies
• Methanol and hybrid turbo calibration capability
• Tailored pedal mapping for improved response
• Backend flash support when used with piggyback devices

What is included

• BM3 licence for the S58 platform with one OTS calibration included
• Optional OTS Map Bundle for access to the full library of pre-configured files
• Access to the BM3 tuner directory for bespoke custom mapping if required
• Cloud storage for your maps and logs

What you will need

• OBD to Ethernet cable for laptop flashing, available separately
• Optional BM3 OBD WiFi Agent for cable-free flashing
• A smartphone, tablet or computer with internet access

Why choose MJ Modifications

• UK BMW specialists who use this software daily on S58 platforms
• Friendly guidance, fast setup help and aftercare that enthusiasts appreciate
• Installation and flashing available at our Warwickshire workshop

Want us to install and configure your calibration in person or remotely? Request a quote from MJ Modifications in Warwickshire at info@mjmodifications.co.uk.

Important information

Some functions are intended for closed-course or off-road use only where permitted. Results depend on fuel quality, supporting hardware and environmental conditions. Always use high-quality petrol and keep your vehicle well maintained.

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