Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Transform the driving experience of your 2024+ Mercedes-AMG GT63 or GT63 S E Performance with the GCA Performance ECU Tune from German Car Accessories. Developed under our GCA Performance line, this advanced ECU calibration delivers sharper throttle response, increased horsepower and torque, and stronger acceleration while maintaining refined drivability.
Designed specifically for the 4.0L Twin-Turbo V8 M177 engine, this tune optimizes ignition timing, boost pressure, and fuel delivery to maximize performance across the entire RPM range. Your original ECU file is securely backed up, allowing you to restore your vehicle to factory settings whenever desired.
Fits
Mercedes-AMG GT 4-Door Coupe
- 2024 Mercedes-AMG GT63 (X290)
- 2025 Mercedes-AMG GT63 (X290)
- 2026 Mercedes-AMG GT63 (X290)
- 2024 Mercedes-AMG GT63 S E Performance (X290)
- 2025 Mercedes-AMG GT63 S E Performance (X290)
- 2026 Mercedes-AMG GT63 S E Performance (X290)
Engine: 4.0L Twin-Turbo V8 (M177)
Features
- Developed by GCA Performance
- Up to 60 HP and 60 TQ increase
- Sharper throttle response
- Increased horsepower and torque throughout the powerband
- Optimized ignition timing, boost pressure, and fuel mapping
- Octane-specific ECU calibration
- Factory speed limiter removal
- Adjustable or extended exhaust burble settings
- Configurable cold start function (On/Off)
- Stage 1 (Factory Downpipes) and Stage 2 (GCA Performance Downpipes) tuning available
- Check engine light suppression for off-road downpipe applications
- Factory ECU file securely backed up
- 100% reversible back to stock
- 1-Year Warranty
Performance Gains
- Horsepower Increase: Up to +60 HP
- Torque Increase: Up to +60 TQ
Important Notes
- The factory ECU is locked. If you do not purchase the ECU Unlock service, you will need to arrange for your ECU to be unlocked before tuning can be completed.
Tuning Process
- Detailed tuning instructions will be emailed after purchase.
- The ECU must be removed from the vehicle and mailed to us for programming.
- We will confirm whether your vehicle requires Stage 1 or Stage 2 calibration after purchase. There is no additional charge for Stage 2 tuning.
Professional Installation
Professional installation is strongly recommended to ensure proper ECU removal, installation, and optimal long-term performance.
Disclaimer
This product is intended for off-road, racing, competition, or track-use vehicles only. Modifying or disabling emissions-related equipment on pollution-controlled vehicles may violate local, state, or federal regulations. Aftermarket ECU tuning may affect emissions compliance, drivability, factory warranty, insurance coverage, and long-term reliability. The purchaser assumes all responsibility for installation and use of this product.
