Transform your BMW M135i F40 with Ecotune ECU software. Achieve massive power gains and sharper response. Expertly installed at MGM Leeds with optional TCU gearbox tuning.
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Unlock the true performance of your BMW M135i F40 (2.0 Petrol) with our Ecotune ECU recalibration. Specifically developed for the B48 turbocharged engine, this software delivers a substantial increase in power and torque while maintaining the sophisticated driving characteristics of the xDrive system. Engineered for reliability and peak efficiency, it is the definitive upgrade for the F40 platform.

M135i Performance Features
- Significant BHP & Torque Gains: Experience a more aggressive pull and higher top-end performance.
- Enhanced Engine Cooling: Software-optimized thermal management for consistent power under load.
- Improved Throttle Response: Sharper, more immediate feedback from the pedal for a connected feel.
- Refined Drivability: Smooth power delivery that enhances both daily commuting and spirited driving.
- MGM Leeds Expert Install: Professional application by our specialized technicians in our Leeds workshop.
Professional Installation at MGM Leeds
This software requires professional application to ensure your vehicle's safety and performance limits are respected. Our team at MGM Leeds performs a comprehensive health check before any software is uploaded.
Tailored Tuning Options
We offer software calibrations to suit your vehicle's current hardware setup. Whether you are running a stock car or have added performance intakes, we have the right map for you.
Stage 1 Calibration
Designed for stock hardware. Focuses on safe, reliable gains that transform the vehicle without needing mechanical changes.
Stage 2 Calibration
Optimized for vehicles with upgraded downpipes and cooling hardware. Maximizes the flow potential of the B48 engine.
Engine & Gearbox Synergy
To fully realize the performance gains of your ECU remap, we highly recommend adding a TCU TUNE. This gearbox software raises torque limits and reduces shift times, ensuring your ZF8 transmission can handle the increased output from the engine.
Compatibility & Applications
This software is specifically calibrated for the F40 chassis M135i xDrive models equipped with the 2.0 Petrol engine.

| Metric | Typical Gains (Stage 1) |
|---|---|
| BHP Increase | +30 to +45 BHP (Fuel dependent) |
| Torque Increase | +50 to +85 Nm |
| Speed Limiter | Removal Optional |
Important Note: For cars manufactured after June 2020, an ECU unlock may be required. Please contact the team at MGM Leeds to confirm your vehicle's compatibility before booking.
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