RENNtech ECU Upgrade | C205 | C 43 AMG | Coupe | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2023 porsche-911--991-2---2015-2019--gt3-rs--opf--esr3026764 For the RENNtech Transmission Upgrade

For the RENNtech Transmission Upgrade on the Mercedes-AMG SUV Models

82mm throttle body kit and RENNtech stainless steel headers for a gain of +76 HP and +58 TQ over stock

Up to 320HP and 355 LB-FT LB-FT

providing dramatically increased cooling capacity while retaining OEM-style fitment

RENNtech ECU Upgrade | C205 | C 43 AMG | Coupe | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2023 porsche-911--991-2---2015-2019--gt3-rs--opf--esr3026764 For the RENNtech Transmission UpgradeThe RENNtech ECU Upgrade brings the C 43 AMG Coupe up to 400 HP and 440 LB FT Gains: +25 HP and +42 LB 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.