RENNtech ECU+ Upgrade | C217 | S63 AMG S 4MATIC | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2021 mercedes-benz-e-class-wagon--212---2010-2013--e63-amg--2010-2011--esr5958650 612 lb-ft @ 1

612 lb-ft @ 1

Works with:

Gains: +49HP & +102LB-FT

Available in gloss or matte finish

The RENNtech Sport Muffler System for the W222 - S550 Sedan comes with an integrated valve system and utilizes the electronic OEM actuators

RENNtech ECU+ Upgrade | C217 | S63 AMG S 4MATIC | 773 HP/778LB-FT | 4.0L V8 BiTurbo | M177 | MY2018-2021 mercedes-benz-e-class-wagon--212---2010-2013--e63-amg--2010-2011--esr5958650 612 lb-ft @ 1ECU+ 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