RENNtech ECU Upgrade for E 550 | W212 | 402 HP / 405 LB-FT | MY2010-2011 mercedes-benz-c-class--204-sedan---2008-2014--c-63-amg-esr4188940 398 LB-FT @ 3

398 LB-FT @ 3

Since both companies are located in South Florida

670 HP / 738 LB-FT

Diverter Valve

RENNtech ECU Upgrade for E 550 | W212 | 402 HP / 405 LB-FT | MY2010-2011 mercedes-benz-c-class--204-sedan---2008-2014--c-63-amg-esr4188940 398 LB-FT @ 3RENNtech ECU Upgrade for 212 E 550. Up to 402HP and 405LB FT. Gains: +20HP & 14LB 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