Description
Unlock the full performance potential of your 2017-2020 Mercedes-Benz S450 or S500 with the German Car Accessories Performance ECU Tune. Developed by German Car Accessories (GCA) under our GCA Performance line, this precision ECU calibration is specifically engineered for the 3.0L Turbocharged M256 Inline-6, delivering substantial gains in horsepower, torque, throttle response, and overall drivability.
Engineered with a performance-first philosophy, this ECU tune transforms the way your S-Class accelerates and responds. Throttle input becomes immediate, boost delivery is optimized, and torque is increased throughout the entire RPM range. Whether you're enjoying effortless highway cruising or demanding maximum performance, this calibration delivers stronger mid-range acceleration, smoother power delivery, and a noticeably more engaging driving experience.
Every GCA Performance ECU Tune is custom-calibrated to your vehicle and fuel quality, ensuring maximum performance while maintaining factory reliability. Both Stage 1 and Stage 2 calibrations are available. Stage 1 is designed for vehicles equipped with factory downpipes, while Stage 2 is optimized for vehicles fitted with GCA Performance Downpipes. There is no additional charge for Stage 2 tuning.
Additional tuning features include factory speed limiter removal, configurable cold start operation, adjustable exhaust burble settings, and check engine light suppression for compatible off-road downpipe applications. Before tuning begins, your original ECU software is securely backed up, allowing your vehicle to be restored to factory settings whenever desired.
Following your purchase, German Car Accessories provides the required programming cable along with comprehensive flashing instructions, allowing you to safely tune your ECU from home.
Every GCA Performance ECU Tune is backed by a 1-Year Warranty.
Fitment
Fits:
- 2017-2020 Mercedes-Benz S450
- 2017-2020 Mercedes-Benz S500
- W222 Chassis
- 3.0L Turbocharged Inline-6 M256 Engine
Performance Gains
- Up to 100 HP Increase
- Up to 100 lb-ft Torque Increase
Features
- Designed by German Car Accessories (GCA)
- GCA Performance ECU Calibration
- Stage 1 Tuning Available
- Stage 2 Tuning Available (GCA Performance Downpipes)
- No Additional Charge for Stage 2 Calibration
- Faster Throttle Response
- Optimized Turbo Response
- Increased Horsepower and Torque
- Optimized Powerband Performance
- Octane-Specific ECU Calibration
- Factory Speed Limiter Removal
- Adjustable or Extended Exhaust Burble
- Configurable Cold Start Function (On/Off)
- Downpipe Check Engine Light Suppression (Off-Road Use Only)
- Factory ECU File Securely Backed Up
- 100% Reversible to Factory Software
- Programming Cable Included
- Detailed Installation Instructions Provided After Purchase
- Backed by a 1-Year Warranty
Specifications
- Brand: German Car Accessories
- Product: Performance ECU Tune
- Vehicle: Mercedes-Benz S450 / S500
- Chassis: W222
- Engine: 3.0L Turbocharged Inline-6 M256
- Tuning Stages: Stage 1 / Stage 2
- Installation Method: ECU Flash via Included Programming Cable
