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 Note: Mercedes M176 engine performance

Note: Mercedes M176 engine performance when measured on the dyno obtains higher power numbers than rated from factory

Cayenne GTS

8 at 5670 rpm   HP(i) 356

215 HP @ 5700 RPM

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 Note: Mercedes M176 engine performanceRENNtech 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