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 2024+ Mercedes-AMG GT43 and GT53 with the GCA Performance ECU Tune. Designed with a performance-first approach, this ECU calibration transforms your AMG's power delivery, throttle response, and overall driving experience.
By optimizing factory engine parameters, GCA Performance tuning delivers sharper acceleration, stronger torque delivery, and improved responsiveness throughout the entire RPM range. From everyday driving to spirited performance runs, your AMG benefits from enhanced power delivery and a more aggressive driving feel.
GCA Performance securely saves your factory ECU data, allowing your vehicle to be returned to the original stock calibration at any time.
We Stand Behind Our Products
All GCA Performance products include a 1-Year Warranty.
Fitment
Fits:
- 2024–2026 X290 Mercedes-AMG GT43 AMG GT53 AMG
- 3.0L Turbo Inline-6 M256 Engine
Key Features
- Custom GCA Performance ECU calibration optimized for improved horsepower and torque
- Faster throttle response and improved acceleration
- Enhanced torque delivery across the RPM range
- Factory speed limiter removal for unrestricted performance
- Octane-specific tuning based on your fuel quality
- Adjustable exhaust acoustics with extended or customizable burble settings
- Cold start behavior configurable (On/Off)
- 100% reversible — return to factory ECU settings anytime
- Stage 1 tuning available with factory downpipes
- Stage 2 tuning available with GCA Performance downpipes
(Stage selection will be confirmed through tuning instructions after purchase. No additional charge for Stage 2 tuning.)
Tuning Gains
- Horsepower Gain: +75 HP
- Torque Gain: +100 TQ
Additional Notes:
- The vehicle comes equipped with factory torque and horsepower limitations.
- A CPC module is recommended to maximize performance gains. Without the CPC module, gains of approximately +60 HP and +60 TQ are still achievable.
- The ECU comes locked from the factory. If an ECU unlock is not purchased, the customer must arrange an ECU unlock before tuning can be completed.
Installation & Tuning Instructions
- After purchase, tuning instructions will be emailed to you.
- The vehicle can be tuned through a supplied tuning cable.
- If an ECU unlock is purchased, additional unlock instructions will also be provided.
- Professional installation is always recommended.
Disclaimer
Removing, disabling, or modifying emissions equipment on pollution-controlled road vehicles may be illegal. This product is intended only for racing, competition, track, hobby, or off-road use where applicable.
Installation or use of aftermarket software may affect drivability, reliability, emissions compliance, insurance coverage, and factory warranty. All installation and usage risks are assumed by the end user and installer.
