CLS63 ECU Tuning

The Mercedes CLS63 AMG is a stunning four-door coupe powered by the legendary naturally aspirated M156 6.2L V8. However, despite its aggressive styling and factory pedigree, conservative engine management leaves a significant amount of performance untapped. The MBH Motorsports Performance ECU Tune is a comprehensive software recalibration designed to eliminate these restrictions, dramatically improving throttle response, drivability, and the raw output of your CLS63.

As a standalone modification, this advanced calibration delivers a highly noticeable increase of +40 horsepower and +40 ft-lbs of torque. However, when this tune is paired with MBH Motorsports Long Tube Headers, the M156 engine is allowed to breathe to its absolute limits—unlocking massive synergy and yielding staggering gains of +80 horsepower and +75 ft-lbs of torque over stock.

Please note: Exact performance results may vary based on environmental factors, ambient temperature, dyno type, fuel quality, and overall engine age.

Refined Power & Engine Reliability

Our M156 calibrations are meticulously developed to smooth out power delivery across the entire RPM band. By optimizing fuel mapping and ignition timing, we eliminate factory electronic throttle lag for immediate, crisp acceleration the moment you step on the gas. While aggressively increasing output, all critical OEM engine protection routines, thermal thresholds, and knock sensors remain fully active for total operational safety and long-term powertrain reliability.

Key Features:

• Standalone Output Gains: Delivers reliable increases of +40 HP and +40 TQ on a completely stock vehicle.

• Maximum Header Synergy: Custom-tailored to maximize exhaust scavenging and airflow velocity when paired with MBH Motorsports long tube headers, unlocking +80 HP and +75 TQ over stock.

• Instant Throttle Response: Eliminates factory pedal dead zones for immediate acceleration and sharper driving dynamics.

• Factory Safety Buffers Preserved: Retains all OEM ECU failsafes, thermal limiters, and knock monitoring parameters for complete peace of mind.

• Top Speed Limiter Removal: Deactivates factory speed governors for unrestricted top-end capability on closed courses.

Compatibility:

• Engine: Mercedes-AMG M156 6.2L V8 (Naturally Aspirated)

• Chassis: Mercedes-Benz CLS63 AMG (W219)

Disclaimer: For off-road racing and competition use only. This product is not intended or legal for installation on registered, licensed vehicles operated on public roads or highways.