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 2023+ Mercedes S63 AMG E Performance (W223) with the GCA Performance ECU Tune. Designed specifically for the 4.0L Twin-Turbo V8 M177 engine, this premium ECU calibration delivers sharper throttle response, stronger acceleration, and increased horsepower and torque while maintaining smooth drivability for everyday use.
Rather than simply increasing peak power, GCA Performance optimizes the entire powerband to provide stronger mid-range torque, faster boost response, and improved overall engine performance. Whether you're enjoying spirited street driving or pushing your vehicle on the track, this tune transforms the driving experience while preserving factory refinement.
Every calibration is tailored to your fuel quality and vehicle configuration, with support for both Stage 1 and Stage 2 setups. Your factory ECU data is securely backed up before tuning, allowing the vehicle to be returned to stock at any time.
Features & Benefits
- Engineered specifically for the Mercedes S63 AMG E Performance 4.0L Twin-Turbo V8 (M177)
- Faster throttle response and improved engine responsiveness
- Increased horsepower and torque throughout the powerband
- Stronger mid-range acceleration and smoother power delivery
- Octane-specific ECU calibration for optimal performance
- Adjustable or extended exhaust burble settings
- Optional cold-start delete or factory cold-start operation
- Factory speed limiter removal
- Downpipe-ready calibration with check engine light suppression (off-road use only)
- 100% reversible with factory ECU data backup
- Available for both Stage 1 and Stage 2 configurations
- Backed by a 1-Year GCA Performance Warranty
Performance Gains
- Up to 60 HP Increase
- Up to 60 LB-FT Torque Increase
Actual gains may vary depending on fuel quality, vehicle condition, supporting modifications, and environmental conditions.
Vehicle Fitment
Mercedes-Benz S-Class
- 2023-2026 Mercedes S63 AMG E Performance (W223)
- Engine: 4.0L Twin-Turbo V8 (M177)
Tuning Features
- Stage 1 calibration for factory downpipes
- Stage 2 calibration for GCA Performance downpipes
- Octane-specific tuning
- Adjustable cold-start settings
- Adjustable exhaust burble settings
- Factory speed governor removal
- Downpipe compatibility with off-road CEL suppression
- Factory ECU backup for easy return to stock
Tuning Process
- Detailed tuning instructions are emailed after purchase
- ECU removal is required for tuning
- ECU must be shipped to GCA Performance for programming
- Factory ECU unlock is required before tuning; customers who do not purchase the ECU unlock service must arrange their own unlock prior to tuning
Professional installation is strongly recommended.
Important Notice
This product is intended for off-road, racing, competition, and closed-course use only. Modifying or disabling emissions-related equipment may not be legal for use on public roads in your area. It is the purchaser's responsibility to ensure compliance with all applicable local, state, and federal laws.
