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Unlock the full performance potential of your 2015-2023 Mercedes-Benz C63 AMG or C63 S AMG with the GCA Performance ECU Tune from German Car Accessories. Designed specifically for the W205 chassis and the powerful 4.0L Twin Turbo V8 M177 engine, this calibration transforms your AMG's throttle response, power delivery, and overall driving experience.

Engineered with a performance-first approach, GCA Performance ECU tuning optimizes the entire powerband to deliver stronger acceleration, improved torque delivery, and sharper throttle response. From instant low-end response to stronger mid-range pull and improved top-end performance, every aspect of your C63 AMG's engine calibration is refined for a more exciting driving experience.

Your factory ECU data is securely saved, allowing you to return your vehicle back to the original factory settings at any time. With advanced customization options including cold start adjustments, enhanced exhaust acoustics, speed limiter removal, and fuel-specific calibrations, this tune provides the perfect balance between daily drivability and maximum performance.

Both Stage 1 (factory downpipes) and Stage 2 (GCA Performance downpipes) tuning options are available, allowing the calibration to match your vehicle's current setup.

We Stand Behind Our Products

• All GCA Performance products include a 1-Year Warranty

Tuning Specifications

Fits:
2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 Mercedes-Benz W205 C63 AMG & C63 S AMG
Engine: 4.0L Twin Turbo V8 M177

• Downpipe readiness with check engine light suppression (for off-road use only)
• Enhanced exhaust acoustics with extended or adjustable burble
• Factory speed governor removal for unrestricted performance
• Octane-specific calibration tailored to your fuel quality
• Fully configurable cold start behavior (On/Off)
• 100% reversible, allowing return to factory ECU settings
• Stage 1 tuning available with factory downpipes
• Stage 2 tuning available with GCA Performance downpipes
• Stage 2 calibration included at no additional charge

Performance Gains

• Horsepower Gain: Up to 100 HP Increase
• Torque Gain: Up to 100 lb-ft Increase

2019-2023 C63/C63s AMG Models

Later W205 models feature factory torque and horsepower limitations through the CPC module.

For maximum performance, we recommend adding a CPC module:

• Without CPC Module: Up to 60 HP and 60 lb-ft gains
• With CPC Module: Full tuning potential available

Actual gains may vary depending on vehicle condition, fuel quality, and supporting modifications.

Tuning Instructions

• After purchase, tuning instructions will be emailed directly to you
• Vehicle tuning is completed through a supplied programming cable
• No ECU removal required
• Simple guided installation process

Upgrade your 2015-2023 Mercedes-Benz C63 AMG or C63 S AMG W205 with the GCA Performance ECU Tune. Designed for the M177 Twin Turbo V8, this software upgrade delivers increased horsepower, stronger torque delivery, sharper throttle response, and customizable performance features to unlock the true potential of your AMG.