Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the full performance potential of your BMW M340i or M440i with the German Car Accessories GCA Performance ECU Tune. Specifically engineered for the G20, G22, G23, and G26 platforms equipped with the powerful turbocharged B58 engine, this ECU calibration delivers increased horsepower, torque, throttle response, and overall driving performance while maintaining smooth and reliable power delivery.
Developed with a performance-first mindset, the German Car Accessories GCA Performance ECU Tune transforms the way your BMW responds, accelerates, and delivers power. Throttle input becomes sharper, torque delivery becomes stronger and more consistent, and the entire powerband is optimized for improved performance from the mid-range surge through the top-end pull.
Your factory ECU data is securely saved before tuning, allowing you to restore your vehicle back to its original factory software whenever desired. Whether you want stronger daily performance, improved acceleration, or maximum potential from your B58 engine, GCA Performance ECU tuning unlocks additional performance while keeping your factory settings recoverable.
Vehicle Fitment
Fits the following BMW models:
- 2019-2023 BMW M340i Sedan (G20)
- 2019-2023 BMW M340i xDrive Sedan (G20)
- 2021-2023 BMW M440i Coupe (G22)
- 2021-2023 BMW M440i xDrive Coupe (G22)
- 2021-2023 BMW M440i Convertible (G23)
- 2021-2023 BMW M440i xDrive Convertible (G23)
- 2021-2023 BMW M440i Gran Coupe (G26)
- 2021-2023 BMW M440i xDrive Gran Coupe (G26)
Engine Compatibility:
- 3.0L Turbocharged Inline-6 (B58 Engine)
Features
- Developed by German Car Accessories under the GCA Performance lineup
- Custom ECU calibration engineered for the BMW B58 turbocharged engine
- Increased horsepower and torque throughout the RPM range
- Improved throttle response for quicker acceleration
- Stronger and more consistent torque delivery
- Optimized power delivery from mid-range to top-end performance
- Downpipe-ready calibration with check engine light suppression (for off-road use only)
- Enhanced exhaust acoustics with extended or adjustable burble settings
- Factory speed limiter removal for unrestricted performance
- Octane-specific calibration tailored to your fuel quality
- Configurable cold start behavior (On/Off)
- 100% reversible ECU tuning with the ability to return to factory settings at any time
- Stage 1 tuning available for vehicles with factory downpipes
- Stage 2 tuning available for German Car Accessories Performance Downpipes
- No additional charge for Stage 2 tuning
- Stage selection will be confirmed after purchase during the tuning process
Performance Gains
- Up to 75 HP increase
- Up to 75 lb-ft (TQ) increase
Actual performance gains may vary depending on fuel quality, vehicle condition, supporting modifications, and environmental conditions.
Tuning Process
- Tuning instructions are emailed after purchase
- Vehicle is tuned remotely using the included ENET cable
- ENET cable is included with your purchase
- If you purchase the optional ECU Unlock service, unlock instructions will also be provided
- Vehicles with production dates after June 2020 (06/2020+) are equipped with factory-locked ECUs
- If the ECU Unlock service is not purchased, you must arrange your own ECU unlock before tuning can be completed
Warranty
- Backed by a 1-Year Warranty
- Factory ECU data is securely saved, allowing the vehicle to be restored to stock settings at any time
