RENNtech ECU+ Upgrade | X167 | GLS 63 S AMG EQ Boost | 745 HP / 767 LB-FT | 4.0L V8 BiTurbo EQ Boost | M177 | MY2021-2023 mercedes-benz-c-class--205-coupe---2016-2023--c-450-esr8195367 BMC cotton filters minimize the

BMC cotton filters minimize the loss of air flow pressure passing through the air filter

450 HP / 332 LB/FT

The link pipe set without a catalytic converter is made of titanium and requires reprogramming of the ECU

+12 HP / +15 LB-FT

flowing over twice as much coolant as the problematic OEM pump and significantly more than its predecessor

RENNtech ECU+ Upgrade | X167 | GLS 63 S AMG EQ Boost | 745 HP / 767 LB-FT | 4.0L V8 BiTurbo EQ Boost | M177 | MY2021-2023 mercedes-benz-c-class--205-coupe---2016-2023--c-450-esr8195367 BMC cotton filters minimize theECU+ Upgrade Up to 745HP 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