Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the hidden performance potential of your 2021-2023 Mercedes-Benz S450 or S500 with the GCA Performance ECU Tune. Engineered with a performance-first approach, this custom ECU calibration transforms the driving experience by optimizing power delivery, throttle response, and overall engine performance.
Designed specifically for the W223 Mercedes-Benz S-Class equipped with the M256 3.0L Turbo Inline-6 engine, this tune improves acceleration, strengthens torque delivery, and enhances responsiveness throughout the entire RPM range. Whether cruising on the highway or pushing the vehicle harder, every input feels sharper and more connected.
GCA Performance securely saves your factory ECU data, allowing you to restore the original factory calibration at any time. With customizable options including throttle optimization, exhaust sound enhancement, speed limiter removal, and fuel-specific calibration, this ECU tune delivers a more engaging and powerful driving experience.
We Stand Behind Our Products
All items from us include a 1-Year Warranty for added confidence.
Fitment
Fits:
- 2021 Mercedes-Benz S450 / S500
- 2022 Mercedes-Benz S450 / S500
- 2023 Mercedes-Benz S450 / S500
- W223 S-Class Sedan
- S450e / S580e 4MATIC
- 3.0L Turbo Inline-6 M256 Engine
Key Features
- GCA Performance custom ECU calibration
- Improved horsepower and torque output
- Sharper throttle response and acceleration
- Optimized torque delivery across the RPM range
- Enhanced exhaust acoustics with adjustable burble settings
- Factory speed limiter removal
- Octane-specific tuning calibration based on fuel quality
- Adjustable cold start behavior (On/Off)
- Factory ECU data securely backed up
- Fully reversible back to stock settings
- Stage 1 and Stage 2 tuning available
Tuning Specifications
- Stage 1: Factory Downpipes
- Stage 2: GCA Performance Downpipes
- Stage selection will be confirmed after purchase based on vehicle setup. No additional charge applies for Stage 2 calibration.
Performance Gains
- Horsepower Gain: +100 HP
- Torque Gain: +100 TQ
Note: 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 may still be achieved.
For vehicles equipped with ECU software protection, an ECU unlock may be required before tuning. Vehicles with locked ECUs will need to have the ECU unlocked prior to calibration.
Tuning Process
- After purchase, tuning instructions will be emailed to you.
- Vehicle tuning is completed through a provided tuning cable.
- If ECU unlock is purchased, additional unlock instructions will be provided.
- Professional installation is always recommended.
Disclaimer
Removing, disabling, or modifying emissions-related equipment on a pollution-controlled road vehicle may violate local laws and regulations. This product is intended for racing, competition, track, hobby, or off-road use only and is not intended for vehicles subject to emissions inspection or control.
Installation and use of aftermarket software may affect vehicle drivability, reliability, emissions compliance, insurance coverage, and factory warranty. All installation and usage risks are the responsibility of the end user and installer.
