RENNtech ECU Upgrade | W205 | C 43 AMG | Sedan | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2021 porsche-718-boxster--982---2016-present--gts-2-3-esr9797142 700rpm 616 whp @ 5

700rpm 616 whp @ 5

Our intermediate level ECU upgrade offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

The RENNtech performance turbo upgrade is truly the ultimate upgrade for your 45 AMG - M133 Turbo-Series

Up to 550HP and 575LB-FT

RENNtech ECU Upgrade | W205 | C 43 AMG | Sedan | 400 HP / 440 LB-FT | M276 | 3.0L V6 BiTurbo | MY2017-2021 porsche-718-boxster--982---2016-present--gts-2-3-esr9797142 700rpm 616 whp @ 5The RENNtech ECU Upgrade brings the C 43 AMG Sedan up to 400 HP and 440 LB FT Gains: +25 HP and +42 LB FT. RENNtech tuning products are certified to meet CARB standards in all 50 States. 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