Mercedes AMG GT(s) 2019

Factory: 469HP / 479 lb-ft
ECM Stage 1 Tune: 570HP / 590 lb-ft
ECM Stage 2 Tune: 650HP / 680 lb-ft

Unleash the Power: Elite ECU Tuning for Your Mercedes AMG GT(s) 2019 M177 Handcrafted AMG 4.0L Twin-Turbo V8

The Mercedes AMG GT(s) 2019 equipped with the legendary M177 Handcrafted AMG 4.0L Twin-Turbo V8 engine is already a performance icon. Our precision ECU tuning unlocks the hidden potential that Mercedes-Benz engineered into this powerplant, delivering breathtaking power gains while maintaining the reliability and refinement you expect from your Mercedes-Benz.

Tuning can be done by sending your ECU in, or we ship a flashing tool which must be returned after the tune is complete.

EVERY TUNE INCLUDES:

• Reprogrammed torque management parameters
• Optimized boost pressure mapping for maximum power delivery
• Reprogrammed variable valve timing control for enhanced drivability
• Smoother engine operation throughout the RPM range
• Reprogrammed throttle response for both Comfort and Sport modes
• Raised RPM limiter (optional)
• Top speed limiter removal (optional)
• Variable RPM limit based on engine temperature warm-up (optional)
• Cold start modification (optional)
• Octane-specific ignition timing optimization (91, 93, E85 blends)

TUNING METHODS:

OBD Tune
OBD tunes allow customers to simply plug and upgrade their ECU. We will ship you an ECM Tuner cable and email you detailed instructions on how to complete the installation yourself.

Bench Flash
Requires ECU to be mailed in. This upgrade requires you to send us your ECU for professional re-programming in our facility.

TALK TO A SPECIALIST:

Get in contact with an ECM Tuner specialist to determine which tuning method is best for your vehicle and learn more about the installation process.

The Mercedes-Benz M177 Handcrafted AMG 4.0L Twin-Turbo V8: A Tuner's Dream

The M177 Handcrafted AMG 4.0L Twin-Turbo V8 found in the Mercedes AMG GT(s) 2019 represents one of Mercedes-Benz's most tunable powerplants ever produced. With its robust construction and advanced engineering, this engine responds exceptionally well to ECU tuning modifications.

Stage 1 Tune: Unlocking Hidden Potential

A Stage 1 tune is the perfect entry point for enhancing your Mercedes AMG GT(s) 2019's performance without requiring any hardware modifications. By optimizing the factory ECU parameters, we extract significant additional power:

• +101 Horsepower – Feel the surge of acceleration from every stoplight
• +111 lb-ft Torque – Massive mid-range punch for confident overtaking
• Enhanced throttle response – Sharper, more immediate power delivery
• Improved fuel efficiency – Optimized air-fuel ratios under normal driving

Stage 1 tuning recalibrates boost pressure, ignition timing, and fuel delivery to unlock performance that Mercedes-Benz left on the table from the factory.

Stage 2 Tune: Maximum Performance

For enthusiasts seeking the ultimate performance, our Stage 2 tune pushes the boundaries further. This aggressive calibration is designed for vehicles with supporting modifications:

• +181 Horsepower – Supercar-rivaling acceleration
• +201 lb-ft Torque – Relentless power throughout the entire rev range
• Optimized boost curves – Peak performance across all driving conditions
• Track-ready calibration – Built for spirited driving and track days

Stage 2 tuning typically requires upgraded intercooler, downpipes, and intake to support the increased airflow demands.

Why Choose ECM Tuner?

Our team specializes exclusively in European performance vehicles. Every tune is developed through extensive dyno testing and real-world validation to ensure optimal performance, reliability, and drivability. We don't compromise – we deliver results.

IMPORTANT INFORMATION:
All ECM Tuner products are intended for off-road and closed-course competition use only.