Boost Your 4.7L Bi-Turbo To AMG Levels With This Ecu Upgrade From RENNtech!
RENNtech is a well known tuning company who specializes in Mercedes Modifications. They have every aspect covered from interior and exterior modifications to Engine and Ecu upgrades. One of their latest announcements is the 550 ECU upgrade for the 4.7L Bi Turbo engine. This engine which has 8 cylinders and is fed by 2 Turbo chargers is quite de-tuned from the factory. This makes sense, because they do not want to compete with themselves and their AMG models. This ECU Tune adds incredible power to the already potent Mercedes chasis. Claims are up to 138HP and 262Tq, which is more power than some cars come from the factory with. This upgrade is sure to please its owners and put a smile on their face every time they stomp on the go pedal!
| ECU:54.221.S550 |  |
RennTech ECU Upgrade Mercedes-Benz S550 07-11 | |
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Updated Software | ECU Upgrade | 550 – M78
With the newest update of their Software Upgrade for the M278 – 4.7L V8 BiTurbo, RENNtech boosts the 550-Series to AMG Power Levels.
The RENNtech upgraded M278 now produces 540 HP and 705 LB-FT at crank. Compared to power numbers by Mercedes-Benz, the 550 gains up to 138 HP and 262 LB-FT. This Software update delivers up to 10 HP and 99 LB-FT more than the previous version.
550 – M278 | 4.7L V8 BiTurbo RENNtech Upgraded Performance:
*Applies to all Models, crank power calculation based on 17% Drivetrain loss on 4-MATIC models and 14% Drivetrain loss on RWD models
Rated by RENNtech: 540 HP @ 4,550 RPM | 705 LB-FT @ 2,900-3,500 RPM
Click HERE to view all of our available products from RENNtech!
