Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Engineered with a performance-first approach, the German Car Accessories (GCA Performance) ECU Tune transforms the driving experience of your Mercedes-Benz GLC63 AMG S E Performance. This advanced ECU calibration is designed to improve throttle response, increase power delivery, strengthen torque output, and optimize the entire powerband for a sharper and more responsive driving experience.
With GCA Performance tuning, your vehicle receives a customized calibration designed around your fuel quality and performance setup. Acceleration becomes stronger, mid-range power delivery is improved, and the engine continues pulling harder through the upper RPM range.
GCA Performance securely saves your factory ECU data before tuning, allowing your vehicle to be fully reverted back to the original stock calibration at any time.
Fitment
Compatible with:
- 2024-2026 Mercedes-Benz GLC63 AMG S E Performance X254
- Engine: 2.0L Turbocharged 4-Cylinder M139
Tuning Specifications
- Stage 1 tuning available for vehicles with factory downpipes
- Stage 2 tuning available for vehicles equipped with GCA Performance downpipes
- Stage selection will be confirmed through tuning instructions after purchase
- No additional charge for Stage 2 tuning
- Downpipe readiness with check engine light suppression (for off-road use only)
- Enhanced exhaust sound with extended or adjustable burble settings
- Factory speed limiter removal for unrestricted performance
- Octane-specific calibration based on your fuel quality
- Fully configurable cold start behavior (On/Off)
- 100% reversible tuning with the ability to return to factory settings at any time
- Factory ECU data securely backed up before tuning
Performance Gains
- Horsepower Gain: Up to +100 HP
- Torque Gain: Up to +100 TQ
Tuning Instructions
- After purchase, GCA Performance will email detailed tuning instructions
- The vehicle can be tuned remotely using a provided tuning cable
- If ECU unlocking is purchased, instructions for the ECU unlock process will also be provided
- The Mercedes-Benz GLC63 AMG comes equipped from the factory with torque and horsepower limitations
- Purchasing a CPC module is recommended to maximize performance gains
- Without a CPC module, the vehicle can still achieve approximately +60 HP and +60 TQ gains
- The factory ECU is locked from Mercedes-Benz
- If an ECU unlock is not purchased, customers must arrange their own ECU unlock before tuning can be completed
Warranty
- All German Car Accessories products include a 1-year warranty.
