Mercedes AMG GTR/GTC Tuning

Keller Performance ECU Tuning for Mercedes AMG GTR/GTC

Keller Performance ECU Tuning is engineered to unlock the full performance potential of the Mercedes AMG GTR/GTC while maintaining refined drivability, reliability, and factory-level safeguards.

Each calibration is expertly developed and meticulously refined to deliver meaningful increases in horsepower and torque. The focus is on usable power, improved throttle response, optimized torque management, and stronger performance throughout the entire rev range.

By increasing mid-range torque and refining power delivery, acceleration becomes noticeably stronger and more responsive, particularly when exiting corners and during high-load driving. The vehicle feels sharper, faster, and more engaging without sacrificing everyday usability.

Your original factory ECU data is securely preserved, allowing the vehicle to be returned to its factory calibration at any time.

Key Features & Options

• Increased horsepower and torque
• Improved throttle response and torque management
• Stronger mid-range acceleration
• Calibration optimized for specific fuel octane
• Check engine light suppression for aftermarket downpipes (off-road use only)
• Top speed limiter removal
• Cold start on/off functionality
• Extended or enhanced burble features when supported by the platform
• Ability to revert to factory ECU settings at any time

Calibrated as a Complete System

When paired with Keller Performance exhaust systems and related performance hardware, the ECU calibration is optimized to account for increased exhaust flow and improved thermal efficiency. This system-based approach delivers consistent performance, optimized power delivery, and refined drivability under both spirited and everyday driving conditions.

Keller Performance ECU Tuning — engineered for power, response, and complete vehicle performance.