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 +45 HP / +76 LB-FT

+45 HP / +76 LB-FT

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

C117 - CLA 45 AMG

While the carbon fiber splitter is a piece of art on their own

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 +45 HP / +76 LB-FTIntermediate 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