M157 ECU Tune
The M157 biturbo V8 is one of AMG’s most powerful engines, but from the factory it is heavily detuned to meet emissions regulations, fuel quality variations, and drivetrain safety margins.
The DTK M157 ECU Tune unlocks the true potential of the engine by safely optimizing boost pressure, ignition timing, fueling, and torque management — delivering massive gains while maintaining factory-level drivability and reliability.
Every vehicle is tuned from scratch based on its exact setup. We do not use off-the-shelf or generic files.
⸻
What the ECU Tune Does
Our ECU calibration focuses on controlled, usable power with long-term engine safety in mind:
•Optimized boost targets and turbo control
•Refined ignition timing for increased torque
•Calibrated fueling under high load
•Sharper throttle response
•Removal of factory speed limiter (where applicable)
•Improved power delivery throughout the RPM range
The result is a dramatically faster car that remains smooth and predictable in daily driving.
⸻
Power Gains
Gains depend on fuel quality and supporting hardware.
Typical results on stock hardware:
•+100 horsepower
•+250 lb-ft of torque on 91 octane
With higher-octane fuel, ethanol blends, or bolt-on upgrades, gains increase substantially.
Best daily performance:
•93 octane
•Light ethanol blend (where available)
⸻
Fuel Support
DTK M157 ECU tunes are calibrated specifically for your fuel:
•91 octane
•93 octane
•Ethanol blends
•Race fuel (application dependent)
Multiple fuel maps can be supplied when required.
⸻
Drivability & Reliability
Despite the significant power increase, drivability remains OEM-like:
•Smooth cold starts
•Factory-style part-throttle behavior
•No harsh transitions or surging
•Safe operating limits for stock internals
Our tuning philosophy prioritizes engine longevity, especially on daily-driven vehicles.
⸻
Tuning Method (Tactrix OBD Remote Tuning)
We tune the M157 platform using Tactrix OpenPort OBD flashing, allowing secure, accurate remote tuning without removing or shipping the ECU.
Included:
•Tactrix OpenPort interface
•Flashing and logging software
•Custom ECU calibration
•Data logging review and revisions
•Free lifetime retunes for future hardware upgrades
This method allows precise calibration updates, fast turnaround times, and continuous refinement as the vehicle evolves.
⸻
Supported Vehicles (M157)
•W212 E63 AMG
•W218 CLS63 AMG
•W221 / W222 S63 AMG
•W166 ML63 / GLE63 AMG
•W463 G63 AMG
•Other M157-equipped AMG models