TunedMercedes M156 Tune
$2,500.00
The TunedMercedes M156 ecu tune is a unique expression of the mercedes-amg M156 engine unleashing tons of torque, engine duty, maximum torque, and much, revs, and top speed. All of this results in a car that feels unleashed from its tuning to an even more aggressive twin turbo v8.
- Remove speed limiter
- Raise rev limiter during shifts
- Raise rev limiter
- Raise maximum torque
- Raise target torque
- Strategic optimization of spark tables
- Lambda based fuel tuning
- Increase air flow limits for use with air intakes
⚡ Unleash your M156’s full potential with confidence — AI-checked, tuner-approved, and road-tested.
100 in stock
Description
Expected Output
The M156 tunes to 540 HP and 494 TQ in a stage one tune calibration with stock parts and achieves approximately another 10-20 HP with air intakes, another 40 HP with 400 cell metallic cats, and an additional 20-50 HP with ethanol blend fuel mix, and significant power with a supercharger.
The Process
As soon as an order is placed we confirm all your details through direct communication. Most of the time we will send you a few items in a TunedMercedes mailer. These will connect your car to your windows laptop as long as this laptop isn’t locked in some corporate or school mode. This process has 3 parts.
Step 1 Reading the ECU
TunedMercedes technician will remote desktop into your windows laptop while connected to the car. They will read your current software configuration and confirm we have access to the file on the servers to perform a “virtual read”.
Step 2 Calibration
Our technicians will calibrate your file matching your modifications to your car’s exact software. The calibrations take place in this model will take part in a special part of the ECU that is designed to be modified or calibrated.
We are telling the ECU that we expect more air and we want more power in these areas. For example raising the top speed isn’t done by tricking the car into thinking it is going slower (this is what a piggy back tuner does in an extremely simplified example) it actually tells the computer in the programmed area to go to 200 mph or whatever is suitable for your current tire rating.
Step 3 Writing
At this point we will have our technician log back in during a scheduled session where the laptop and car are connected with supplied gear that we shipped quickly to you. In this session we will write the calibrated file back to your ECU.
In certain rare cases we may ask you to send your ECU or come in for a bench flash if there is no matching software found.
Bench Flash Method
Step 1
Remove the ECU, take pictures of it, send it to us packaged and we will read it on the bench, then calibrate it, then write the software on the bench.
Step 2
Reinstall the ECU
What to Expect
Expect faster throttle response and tuned mercedes experience while retaining stock-ish feel. The end result is a car that feels like it was factory tuned for 540hp.
Expected Output — M156 Stage 1
Pre-Tune Checklist (2–5 minutes)
- Windows laptop (no corporate/school restrictions)
- Battery tender recommended; stable 12V+ during flash
- No check-engine lights unrelated to exhaust
- Recent maintenance: oil, plugs, coils in good condition
- Internet connection for remote session (if not in-person)
1) Read
We read your stock ECU via OBD or bench (rare).
2) Calibrate
We tailor spark, torque, airflow, and limiters to your car.
3) Write
Flash the tuned file; road-test and fine-tune as needed.
Will this work with my resonator delete?
Yes. A resonator delete is compatible. We do not code out emissions devices and do not “delete” systems.
Remote vs. in-person — what’s better?
Remote works great for most M156s with a stable laptop and power. In rare cases we’ll recommend bench flash; we guide you.
What support is included?
Datalog review and one revision within 30 days to fine-tune drivability. Return-to-stock at no charge.
Fuel & maintenance requirements?
Use quality 91–93 octane. Coils and plugs should be healthy; we can advise on one-step-colder plugs if applicable.
“Rely wonderful job bro thnx alot”
“Drives great… can hear the turbos now”
Performance
M156 ECU Tune
Additional information
| Engine Family | M156 |
|---|---|
| Platform | CLS | E | ML | G | S | R |
| Stage | Stage 1 | Stage 2 | Stage 4 |
| Method | Remote | Bench |
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