RENNtech ECU+ Upgrade | W213 | E63 AMG (S) 4MATIC+ | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2023 sale-person The rear spoiler offers a

The rear spoiler offers a smooth transition of airflow over the trunk lid of the vehicle to ambient air and produces greater down force across the rear of the vehicle at speed

Rated by RENNtech (peak @crank):              773 HP @ 5

If you wish to go back to factory settings simply press Button 2

SLC 43 AMG Coupe (R172 | M276 | 3

454 lb-ft @ 3

RENNtech ECU+ Upgrade | W213 | E63 AMG (S) 4MATIC+ | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2023 sale-person The rear spoiler offers aECU+ Upgrade Up to 773 HP 778 LB FT Gains: +82 HP & +84 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 into the OBD2 port and delivers the file you