Description
Disclaimer : Cancellations within 24 hours are subject to a cancellation fee. After 24 hours, a higher fee will apply.
Unlock the full potential of your 2010-2014 Mercedes-Benz CL550 C216/W216 with the GCA Performance ECU Tune. Designed with a performance-first approach, this custom ECU calibration transforms the way your vehicle responds, accelerates, and delivers power.
By optimizing engine parameters, the GCA Performance tune enhances throttle response, strengthens torque delivery, and sharpens the entire powerband for a more engaging driving experience. From improved mid-range acceleration to stronger top-end performance, every aspect of the M278 twin-turbo V8 engine is calibrated to deliver maximum efficiency and performance.
Each tune is developed specifically for your vehicle while maintaining the ability to return to factory settings. GCA Performance securely saves your original ECU data, allowing you to restore your Mercedes-Benz CL550 back to its stock configuration at any time.
Whether you are running factory downpipes or upgrading to GCA Performance Downpipes, our available Stage 1 and Stage 2 calibrations provide the flexibility needed to match your setup.
Features & Benefits
- Designed by German Car Accessories under the GCA Performance line
- Custom ECU calibration for the Mercedes-Benz CL550 M278 Twin Turbo V8
- Increased horsepower and torque output
- Sharper throttle response and improved acceleration
- Optimized power delivery throughout the RPM range
- Improved turbocharger response and efficiency
- Octane-specific calibration based on fuel quality
- Factory speed limiter removal for unrestricted performance
- Adjustable exhaust burble settings
- Configurable cold start behavior
- Downpipe readiness with check engine light suppression (for off-road use only)
- Factory ECU data securely saved
- 100% reversible back to factory settings
- Includes tuning instructions and required cable
- Backed by a 1-Year Warranty
Tuning Specs
- Fits: 2010 2011 2012 2013 2014 C216 W216 Mercedes-Benz CL550 RWD / CL550 4MATIC
- Engine: 4.7L Twin Turbo V8 M278 Engine
- Stage 1: Designed for vehicles with factory downpipes
- Stage 2: Designed for vehicles equipped with GCA Performance Downpipes
- Horsepower Gain: Up to +120 HP
- Torque Gain: Up to +150 TQ
- Installation: Remote ECU tuning via provided cable
Tuning Instructions
- After purchase, tuning instructions will be emailed to you.
- The vehicle can be tuned remotely using the provided cable.
- Stage selection will be confirmed through the tuning instructions based on your vehicle setup.
- Stage 2 tuning does not require an additional charge when paired with the correct hardware.
