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 2012-2015 Mercedes-Benz ML63 AMG with the GCA Performance ECU Tune, engineered specifically for the W166 platform equipped with the powerful 5.5L Twin Turbo V8 M157 engine.
Designed by German Car Accessories under our GCA Performance lineup, this ECU calibration transforms the driving experience by optimizing engine parameters for increased power, sharper throttle response, and stronger torque delivery throughout the entire RPM range.
The ML63 AMG already delivers impressive performance from the factory, but our tuning software pushes it further by refining boost pressure, ignition timing, fueling, and throttle mapping. Whether you are looking for improved street performance or building a more aggressive AMG setup, GCA Performance tuning helps maximize the capability of your M157 engine.
Every tune includes a secure backup of your original ECU data, allowing you to return your vehicle back to factory settings at any time.
We Stand Behind Our Products
- All GCA Performance products include a 1-Year Warranty.
Features
- Up to 120 HP and 150 LB-FT performance increase
- Improved throttle response and acceleration
- Optimized engine calibration for the M157 Twin Turbo V8
- Stronger torque delivery across the powerband
- Stage 1 and Stage 2 tuning available
- Downpipe readiness with check engine light suppression (off-road use only)
- Adjustable or extended exhaust burble settings
- Factory speed limiter removal
- Octane-specific calibration based on fuel quality
- Configurable cold start behavior (On/Off)
- Factory ECU data securely saved
- 100% reversible back to stock
Tuning Specifications
- Fits: 2012 2013 2014 2015 Mercedes-Benz ML63 AMG
- Platform: W166
- Engine: 5.5L Twin Turbo V8 M157
- Stage 1: Factory Downpipes
- Stage 2: GCA Performance Downpipes
- Tuning Method: ECU flashing via supplied cable
- Warranty: 1-Year GCA Performance Warranty
Performance Gains
- Horsepower Increase: +120 HP
- Torque Increase: +150 LB-FT
Tuning Instructions
- After purchase, detailed tuning instructions will be emailed to you.
- The vehicle can be tuned through the ECU using the provided tuning cable.
- We will confirm the required tuning stage after reviewing your vehicle setup.
Vehicle Fitment
- 2012 Mercedes-Benz ML63 AMG (W166)
- 2013 Mercedes-Benz ML63 AMG (W166)
- 2014 Mercedes-Benz ML63 AMG (W166)
- 2015 Mercedes-Benz ML63 AMG (W166)
Note: Designed specifically for the W166 Mercedes-Benz ML63 AMG equipped with the 5.5L Twin Turbo V8 M157 engine. Stage 1 and Stage 2 calibrations are available depending on vehicle modifications.
