RENNtech ECU+ Upgrade | W221 | S 63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-s-class-coupe--217---2015-2017--s-65-amg-esr5480974 The ECU Plus Upgrade brings

The ECU Plus Upgrade brings the C292 - GLE 43 AMG Coupe up to 416 HP and 460 LB-FT

RENNtech’s side skirts feature an OEM level of quality

Rated by Mercedes-Benz:                        463 HP @ 5

E550 (W212 | FL MY2014-16 | 4MATIC | M278 | 4

Any parts with more noticeable areas of concern are scrapped entirely and never offered to our highly discerning clientele

RENNtech ECU+ Upgrade | W221 | S 63 AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2011-13 mercedes-benz-s-class-coupe--217---2015-2017--s-65-amg-esr5480974 The ECU Plus Upgrade bringsECU+ Upgrade Up to 669HP 734TQ Gains: +106 HP +140TQ 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. Programming takes only a few minutes and the vehicle can be