RENNtech ECU+ Upgrade | V167 | GLE 63 AMG EQ Boost | 745HP / 767LB-FT | 4.0L V8 BiTurbo EQ Boost | M177 | MY2021-2023 mercedes-benz-sl-class--232---2022-present--sl-55-amg-biturbo-esr7979792 Up to 635HP and 620TQ

Up to 635HP and 620TQ

The look of this system can be further enhanced with the addition of the superbly handcrafted high-quality optional carbon- fibre rear diffuser to give even more exclusivity to the Sports Cup Line titanium system and the Porsche GT3

RENNtech rear suspension upgrade with heim joints utilizes four control arms (two upper and two lower) to connect the rear axle to the vehicle's frame

Our proprietary ECU upgrade for the Mercedes M277 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

CLASS E (W 211) 500 V8 [2 Filters Required] (HP: 388 | Year: 06 > 09)

RENNtech ECU+ Upgrade | V167 | GLE 63 AMG EQ Boost | 745HP / 767LB-FT | 4.0L V8 BiTurbo EQ Boost | M177 | MY2021-2023 mercedes-benz-sl-class--232---2022-present--sl-55-amg-biturbo-esr7979792 Up to 635HP and 620TQECU+ Upgrade Up to 745 HP 767 LB FT Gains: +97 HP & +54 LB FT RENNtech HHT (Hand Held Tuner) allows you the unlimited ability to switch between tuned and stock ECU programming without ECU removal! RENNtechs proprietary tuning module contains both the Tuned file as well as 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