RENNtech ECU Upgrade | E 400 | C207 | 392HP/432LB-FT | 3.0 L BiTurbo V6 | M276 | MY2015-2017 maserati-mc20-esr2615562 E400 (MY2018+ | W213 |

E400 (MY2018+ | W213 | M276 | 3

Rated by RENNtech:               435 HP @ 5

329 hp @ 5

Rated by RENNtech:               669 HP @ 5

Our proprietary ECU upgrade for the Mercedes M277 engine offers huge gains in performance across the entire RPM range without sacrificing around town comfort or daily driver reliability

RENNtech ECU Upgrade | E 400 | C207 | 392HP/432LB-FT | 3.0 L BiTurbo V6 | M276 | MY2015-2017 maserati-mc20-esr2615562 E400 (MY2018+ | W213 |RENNtech ECU Upgrade for 212 E 400 BiTurbo 4 MATIC Coup. Up to 392HP and 432LB FT. Gains: +63HP & +78LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! 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