RENNtech ECU Upgrade for G-class G 550 [W463]




RENNtech has been at the forefront of ECU tuning since electronic engine management started to show up in vehicles during the mid-1980’s. Their experience, countless hours of in-house research & development, and extensive testing ensure that their proprietary ECU upgrades offer incredible performance gains and rock solid reliability.

RENNtech tuning software for Mercedes offers significant gains in horsepower and torque across the entire power band. By modifying ignition timing and throttle mapping, optimizing air/fuel ratios, increasing the engines rev limiter, and modifying boost mapping for turbocharged vehicles, RENNtech’s performance software will unleash your Mercedes true potential.

Stock Performance:

382 HP @ 6000 RPM
391 LB-FT @ 2800-4800 RPM

Modified Performance:

402 HP @ 6000 RPM
405 LB-FT @ 2800 RPM


+20 HP
+14 LB-FT

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