RENNtech Intermediate ECU Upgrade | W166 | GLE63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2016+ mercedes-benz-e-class-sedan--213---2017-present--e-300-esr7131049 C117 - CLA 45 AMG

C117 - CLA 45 AMG

530 awhp @ 5

Our rear diffuser is the companion component to the front splitter and functions to decrease drag and increase down force by improving the underbody airflow and its transition to ambient air

fiber is pre-impregnated (hence the name) with resin at a production facility

Produced in Europe

RENNtech Intermediate ECU Upgrade | W166 | GLE63 AMG | SUV | 638 HP / 695 LB-FT | M157 | 5.5L V8 BiTurbo | MY2016+ mercedes-benz-e-class-sedan--213---2017-present--e-300-esr7131049 C117 - CLA 45 AMGIntermediate ECU Upgrade Up to 638HP 695LB FT Gains: +33HP & +69LB FT RENNtech M157 Biturbo ECU+ Upgrades are TV approved! Our proprietary ECU+ upgrade for the Mercedes M157 Biturbo 4 MATIC engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability. Our intermediate level ECU upgrade offers huge gains in performance across the entire RPM range without sacrificing around town