Description
The MG Flasher Stage 2 calibration for MINI B48/B46 vehicles is designed for enthusiasts seeking maximum performance gains from upgraded hardware, specifically vehicles equipped with a high-flow downpipe or high-flow catalytic converter. This advanced ECU tune is engineered to deliver significant increases in horsepower and torque while maintaining smooth, controlled power delivery across the entire RPM range.
Stage 2 focuses on optimized boost control, refined ignition timing, and enhanced torque management, delivering stronger acceleration, improved throttle response, and a more aggressive overall driving experience.
Important: A valid MG Flasher Flasher License is required to flash any OTS or custom maps.
Vehicle Requirements
- Only MINI models equipped with the MG1 ECU are supported
- Must be used with a high-flow downpipe or high-flow catalytic converter
- ECU compatibility should be confirmed with support before purchase
ECU Compatibility & Unlock Requirements
- ECUs manufactured July 2020 and newer are supported with bench unlock (Femto or AutoTuner)
- ECU must be sent to an authorized unlock provider or unlocked by a qualified third-party tuner
- Some ECU software versions may require Bench OBD Unlock
- Unlock services are not included and may incur additional costs from third-party providers
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
- Improved mid-range and top-end power delivery
- Stronger overall acceleration performance
Additional Features & Options
- Speed limiter removal
- Cold start adjustment (off-road use only)
- High-flow catalytic converter adaptation (off-road use only)
- Exhaust flap control
Advanced Feature Development
- Exhaust burble adjustable on-the-fly (coming soon)
- Switchable maps on-the-fly (coming soon)
- Max cooling on-the-fly (coming soon)
Note: On-the-fly features are currently supported only on F-Series Gen 1 B58 vehicles. Hybrid and Gen 2 systems are under development. Temporary adjustments are available during flashing (15–20 seconds via ENET). Ethanol switchable maps will return in a future update with full on-the-fly capability.
Transmission Limiter Information
Gen 2 Vehicles
This software uses advanced torque modeling without altering factory transmission logic.
Factory torque limits:
- B58: 550 Nm (400 lb-ft)
- B48: 440 Nm (325 lb-ft)
The system allows torque limiter adjustment up to 1000 Nm through proprietary calibration, configurable within the application.
Gen 1 Vehicles (8HP50 Transmission)
These vehicles include a factory transmission torque limiter. For best performance and torque smoothness:
- Increase limiter using xHP Flashtool, or
- Have transmission ECU limits recalibrated by a professional tuner
Software Integrity Features
- CVN (Checksum Verification Number) remains unchanged
- Flash counter remains untouched
- Designed for reduced detectability at dealer-level diagnostics
Usage Disclaimer
MG Flasher products are intended for competition and off-road use only and may not be legal for use on public roads depending on local regulations. Users are responsible for compliance with emissions laws, safety standards, and warranty conditions.
ECU Unlock Information
- Bench unlock required for many ECUs manufactured July 2020 and newer
- Performed by Femto or AutoTuner providers
- Some ECUs may require Bench OBD unlock after software updates
- Unlock services are handled by third-party providers and may incur additional fees
