Performance Calibration: Mercedes-AMG GT53 4-Door (X290)
Engine: M256 3.0L Inline-6 Turbo with EQ Boost | Model Years: 2019+
The AMG GT53 features one of the most technologically advanced powertrains in the Mercedes-AMG lineup. Our calibrations are designed to harmonize the 48V EQ Boost system with the M256’s twin-scroll turbo, providing instantaneous throttle response and significant mid-range power gains.
🏁 Stock Baseline
Standard Output: 429 HP / 384 LB-FT (520 Nm)
EQ Boost: Integrated Starter-Generator adds up to 21 HP / 184 LB-FT (250 Nm) in short bursts.
Engine Type: 3.0L Turbocharged + Electrically Supercharged Inline-6
🚀 Performance Calibration Options
| Feature | Performance Level 1 | Performance Level 2 |
| Power Output | 500 HP | 520 HP |
| Peak Torque | 457 LB-FT (620 Nm) | 486 LB-FT (660 Nm) |
| Requirements | Stock Hardware | Catless Downpipe Required |
| Speed Limiter | V-Max Removed | V-Max Removed |
| Drive-ability | OEM Smoothness | Aggressive / Track Ready |
🛠️ Calibration Enhancements
We focus on optimizing the interplay between the electric supercharger and the exhaust-driven turbo to eliminate lag and maximize top-end pull:
Turbo Optimization: Increased boost pressure targets within the M256's high-efficiency mapping.
Ignition & Fueling: Re-calibrated maps for high-octane fuel to improve combustion efficiency and cooling.
Torque Limiters: Modified software caps to allow the 9G-TCT transmission to utilize the engine's increased output.
EQ Boost Integration: Maintains the seamless transition between the 48V electric assist and the gasoline engine.
Technical Disclaimer: All factory engine protection software and fail-safes remain intact. Stock power and tuned gains may vary based on fuel quality (93+ Octane recommended), mileage, and ambient conditions.
2019+ Mercedes AMG GT53 M256 Performance Calibration
- Send in your ECU to get tuned and then shipped back
