RENNtech ECU Upgrade GL 450 (X166- 501 HP / 576 LB-FT for M278 Biturbo) mercedes-benz-glc-class--253---2016-present--glc-43-amg-esr6444157 RENNtech is proud to introduce

RENNtech is proud to introduce an all new rear decklid spoiler design for the Mercedes-Benz C-Class Coupe

With the proprietary RENNtech ECU Tuning the C190 AMG GT R gains up to +50 HP and +73 LB-FT

Complete the look with a set of two exquisite tailpipes in titanium

RS7 (C8 4K)

RENNtech ECU Upgrade GL 450 (X166- 501 HP / 576 LB-FT for M278 Biturbo) mercedes-benz-glc-class--253---2016-present--glc-43-amg-esr6444157 RENNtech is proud to introduceRENNtech ECU Upgrade for 166 GL 450 BiTurbo. Up to 501HP and 576LB FT. Gains: +139HP & +170LB FT RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to the ECU. Programming takes