Performance Calibration: Mercedes-Benz AMG GT63S (X290)
Engine: M177 4.0L V8 Biturbo | Model Years: 2018,2019, 2020.
The GT63S is the pinnacle of AMG’s 4-door performance. Our calibrations are engineered to sharpen the 4MATIC+ delivery and extract the massive untapped potential of the M177 biturbo engine while preserving the sophisticated drive modes and safety logic.
🏁 Stock Baseline
Standard Output: 630 HP / 664 LB-FT (900 Nm)
Engine Code: M177 V8 Biturbo
🚀 Performance Calibration Options
| Feature | Performance Level 1 | Performance Level 2 |
| Power Output | 680 HP | 730+ HP |
| Peak Torque | 737 LB-FT (1000 Nm) | 800+ LB-FT (1080+ Nm) |
| Requirements | Stock Hardware | Catless Downpipes Required |
| V-Max Limiter | Removed | Removed |
| Upgrade Cost | Base Pricing | +$200 (Call for Details) |
🛠️ Calibration Features & Safety
Our software engineers focus on a "balanced performance" approach, ensuring the car remains reliable for daily use:
Advanced Boost Control: Precisely increased boost levels that work within the efficiency range of the factory twin-scroll turbochargers.
Torque Management: Re-mapped torque limiters to improve "shove" in the lower gears while protecting the 9-speed MCT transmission.
Thermal Protection: Integration of enhanced cooling logic to manage engine temperatures during high-load scenarios.
Drivability: Zero compromise on comfort. The GT63S retains its luxury character in 'Comfort' mode while becoming a track-focused beast in 'Race' mode.
Performance Note: Results are highly dependent on fuel quality (93 Octane / 98 RON recommended) and ambient temperatures. Level 2 calibrations vary based on specific exhaust hardware used.
2018 - 2020 Mercedes AMG GT63S M178 Performance Calibration
- Send in your ECU to get tuned and then shipped back





