Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the full potential of your 2023+ Mercedes-Benz GLC43 AMG with the GCA Performance ECU Tune. Designed with a performance-first approach, this ECU calibration enhances power delivery, throttle response, and overall drivability while optimizing the vehicle’s factory performance capabilities.
Developed by German Car Accessories (GCA) under our GCA Performance lineup, this tune transforms your GLC43 AMG by improving torque delivery, sharpening acceleration, and creating a more responsive driving experience across the entire RPM range. From daily driving to spirited performance runs, every aspect of the powerband is refined for stronger and smoother performance.
GCA Performance securely saves your original ECU data, allowing the vehicle to be returned to its factory settings whenever needed.
We Stand Behind Our Products
- All GCA Performance products include a 1-Year Warranty.
Fitment
Fits:
- 2023 Mercedes-Benz GLC43 AMG X254
- 2024 Mercedes-Benz GLC43 AMG X254
- 2025 Mercedes-Benz GLC43 AMG X254
- 2026 Mercedes-Benz GLC43 AMG X254
- 2023+ Mercedes-Benz GLC43 AMG C254 Coupe
- Equipped with the 2.0L Turbocharged 4-Cylinder M139 Engine
Key Features
- Increased horsepower and torque output
- Improved throttle response and acceleration
- Optimized ECU calibration for enhanced performance
- Adjustable exhaust acoustics with extended or adjustable burble settings
- Factory speed limiter removal
- Octane-specific tuning calibrated for your fuel quality
- Fully reversible ECU programming
- Stage 1 and Stage 2 tuning support available
- Compatible with factory downpipes or GCA Performance downpipes
Tuning Specs
- Engine: 2.0L Turbocharged 4-Cylinder M139
- Horsepower Gain: +75 HP
- Torque Gain: +100 TQ
- Stage 1: Factory Downpipes
- Stage 2: GCA Performance Downpipes
- ECU data backup included
- 100% reversible back to factory settings
Additional Notes:
- The vehicle includes factory torque and horsepower limitations. A CPC module is recommended to maximize available gains.
- Without a CPC module, gains may be limited to approximately +40 HP and +40 TQ.
- Factory ECU unlocking may be required for vehicles with locked ECUs. Customers without ECU unlock service will need to arrange ECU unlocking before tuning.
Installation Instructions
After purchase:
- Tuning instructions will be emailed to you.
- ECU tuning is performed using a provided programming cable.
- Professional installation is strongly recommended.
Disclaimer
Removing, disabling, or modifying emissions-related systems on pollution-controlled vehicles may be illegal. This product is intended only for racing, competition, track, hobby, or off-road applications. Installation and usage may affect vehicle drivability, reliability, emissions compliance, insurance coverage, and factory warranty. The installer and end-user assume all risks associated with installation and use.
