RENNtech ECU+ Upgrade | W212 | E 63 (S) AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 mercedes-benz-c-class--204-sedan---2008-2014--c-63-amg-2012--esr7628161 Please ask a representative about

Please ask a representative about this option prior to purchasing or installing the Stage II Turbo Upgrade

Dyno Measured Power:

With the proprietary RENNtech ECU Plus Upgrade the C205 - C 43 AMG Coupe gains up to +41 HP and +62 LB-FT

RENNtech M277 Biturbo ECU Upgrades are TÜV approved

CLASS S (W 220) 55 AMG V8 [2 Filters Required] (HP: 360 | Year: 99 > 02)

RENNtech ECU+ Upgrade | W212 | E 63 (S) AMG | Sedan | 669 HP / 734 LB-FT | M157 | 5.5L V8 BiTurbo | MY2014-2016 mercedes-benz-c-class--204-sedan---2008-2014--c-63-amg-2012--esr7628161 Please ask a representative aboutECU+ Upgrade Up to 669HP 734LB FT Gains: +64HP & +88LB FT 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