ECU+ Upgrade | 523HP / 583TQ | Gains: +102 HP / +128 TQ

RENNtech tuning products are certified to meet CARB standards in all 50 States.

RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal!

Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes only a few minutes and the vehicle can be reflashed at any time as many times as you wish.

RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid 1980s! Our experience, countless hours of in-house research, development and exhaustive testing ensure that our proprietary ECU upgrade offers incredible performance gains and rock solid daily driver reliability.

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicle's entire power band. By modifying ignition timing and throttle mapping, optimizing air-to-fuel ratios, increasing the engine's rev limiter and modifying boost mapping for turbo-charged vehicles, RENNtech performance software unleashes the true potential of your Mercedes.

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the vehicles entire power band. By modifying ignition timing and throttle mapping, optimizing air-to-fuel ratios, increasing the engine's rev limiter and modifying boost mapping for turbo-charged vehicles, RENNtech performance software unleashes the true potential of your Mercedes.

With the proprietary RENNtech ECU+ Tuning the W463 - G550 (MY2019+) gains up to +102 HP and +128 LB-FT, based on power numbers measured by RENNtech. Please note that the Mercedes M177 engine performance when measured, obtains higher numbers than rated from factory. The maximum power number reached with the RENNtech ECU+ Upgrade for the W463 - G 550 is up to 528 HP and 558 LB-FT.

For detailed information about our ECU+ Upgrades feel free to email us at info@renntechmercedes.com or call our sales-team under 561.845.7888.

50-State Street Legal RENNtech HHT

The HHT for Mercedes-Benz and Mercedes-AMG, 4.0 L BiTurbo V8, M176 | 177 | 178, engines is EPA Emissions compliant and street legal in all 50 States.

This product conforms to EPA Emission Standards and does not reduce effectiveness of your vehicles original pollution control systems.

A CARB Executive Order was granted to the RENNtech HHT based on emission test results in the modified configuration, an examination of the On-Board Diagnostic II (OBD II) system, and an engineering evaluation.

Notes:

We have found the M176 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz. We typically see higher baseline numbers than claimed by the factory.
Power gains are calculated based on stock numbers measured by RENNtech. Crank Performance Numbers are calculated with a 20% Drivetrain loss on G-Wagon models.
Our numbers will be dependent on conditions and fuel quality. 93+ Octane gasoline is mandatory with this Performance Upgrade.
States known for poor fuel quality have to be supplied with a lower power setup. Please call for details and Race fuel options +1-561-845-7888.

Performance Numbers Overview

G 550 (W463) | MY2017+ | 4x4 | M176 | 4.0L V8 BiTurbo) Stock Performance (at crank):

Rated by Mercedes-Benz: 416 HP @ 5,250-5,500rpm; 450 LB-FT @ 2,250-4,750rpm
Rated by RENNtech: 421 HP @ 5,200rpm; 455 LB-FT @3,250-4,650rpm
- Note: Mercedes M176 engine performance when measured, obtains higher power numbers than rated from factory.

G 550 (W463 | MY2017+ | 4x4 | M176 | 4.0L V8 BiTurbo) Modified Performance (at crank):

Rated by RENNtech: 523 HP @ 5,150rpm; 583 LB-FT @ 2,800-3,200rpm

418whp @ 5,150rpm; 466wtq @ 2,800-3,200rpm

Crank Performance Numbers are calculated with a 20% Drivetrain loss on G-Wagon models.

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