Description
The MG Flasher Stage 2 tune for BMW B58-powered F and G Series vehicles is engineered for enthusiasts seeking maximum performance from vehicles equipped with a high-flow downpipe or high-flow catalytic converter. This advanced ECU calibration is designed to extract significantly more power and torque while maintaining smooth drivability and optimized power delivery throughout the entire RPM range.
The Stage 2 calibration increases boost pressure, refines ignition timing, optimizes lambda targets, and enhances torque management to provide aggressive acceleration and improved overall performance. For optimal results, transmission tuning is strongly recommended.
Important: A valid MG Flasher License is required to flash any OTS or custom maps.
ECU Compatibility & Unlock Requirements
- ECUs manufactured July 2020 and newer are supported with a bench unlock performed by Femto or AutoTuner.
- ECU must be sent to an unlock provider or unlocked by a qualified third-party tuner using appropriate tools.
- Recent software updates may require Bench OBD Unlock.
- Bench unlock services are not included and may incur additional charges from the service provider.
Required Vehicle Modifications
Stage 2 calibration requires one of the following:
- High-flow downpipe
- High-flow catalytic converter
Transmission tuning is strongly recommended for optimal performance and torque management.
Key Performance Features
- Increased boost pressure
- NBT display HP/TQ gauge calibration
- Torque limiter optimization
- Lambda optimization
- Ignition timing optimization
- Optimized for xHP transmission tuning software
- Enhanced throttle response
- Increased horsepower and torque output
- Optimized power delivery across the full RPM range
- Improved mid-range and top-end performance
Included OTS Map Features
Switchable Maps On-The-Fly
The world's first BMW B48/B58 map switching solution allows drivers to instantly switch between supported calibrations using a simple cruise control button combination without reflashing the ECU.
- Supports Gen 1 and Gen 2 B48/B58/S58 platforms
- HPFP support included
- No reflash required
- Mini and X63 support currently under development
Dynamic Exhaust Burble Control On-The-Fly
Adjust exhaust burble intensity in real time through cruise control controls.
- Supports Gen 1 and Gen 2 B48/B58/S58 platforms
- No reflash required
- Mini and X63 support currently under development
Max Cooling On-The-Fly
Activate enhanced cooling strategies instantly using a cruise control button sequence.
- Supports Gen 1 and Gen 2 B48/B58/S58 platforms
- No reflash required
- Mini and X63 support currently under development
Advanced Tuning Features
- Torque Limit Adjustability
- Speed Limit Removal (available on select software)
- Startup Roar (available on select software)
- Torque-by-Gear Limiter (available on select software)
- Burble Flame Map (available on select software)
- Cold Start Adjustment (racing/off-road use only)
- User-adjustable Sport Gauges (HP and Torque)
- Custom flashing support for tuner-created maps
- Access to additional OTS maps and OTS bundles (sold separately)
Flex Fuel & Integration Support
- Flex Fuel support with ethanol content sensor or manual override (CC 7.3)
- Motiv ReFlex integration support (CC 7.2)
Diagnostics & Data Logging
- BMW-specific DTC reading and clearing
- Adaptation reset functions
- Coding restoration support
- Real-time ECU logging and graphing available through Logger License (sold separately)
Transmission Limiter Information
Gen 2 Vehicles
MG Flasher provides software-based torque limiter adjustment without requiring transmission tuning or manipulation of torque/load calculation models.
Factory torque limits:
- B58: 550 Nm (400 lb-ft)
- B48: 440 Nm (325 lb-ft)
MG Flasher's proprietary software allows adjustment of these limits up to 1000 Nm. The limiter value is fully adjustable within the application.
Gen 1 Vehicles with 8HP50 Transmission
These vehicles retain a transmission torque limiter. For optimal performance and smooth torque delivery, increasing transmission limiter settings is recommended.
Available options:
- Increase transmission limiter using xHP Flashtool
- Have a qualified tuner recalibrate transmission ECU limiter settings
Software Integrity Features
- CVN (Checksum Verification Number) remains unchanged
- Flash counter remains untouched
- Maintains OEM-style software signatures for reduced visibility during dealer-level diagnostics
Disclaimer
MG Flasher products are intended for competition and off-road use only and may not be legal for use on public roads in all jurisdictions. Vehicle owners are responsible for compliance with local laws, emissions regulations, and warranty considerations.
