RENNtech ECU+ Upgrade | C218 | CLS 550 | 540HP / 705LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 mercedes-benz-e-class-sedan--213---2017-present--e-300-esr7131049 703 wtq @ 6

703 wtq @ 6

CLASS C (W 204) 350 V6 4-Matic Blue Efficiency (HP: 306 | Year: 11 > )

The carbon fiber extractor inserts attach with double-sided tape making installation a breeze

405 LB-FT @ 2800-4800 RPM

RENNtech ECU+ Upgrade | C218 | CLS 550 | 540HP / 705LB-FT | 4.7L V8 BiTurbo | M278 | MY2015-2018 mercedes-benz-e-class-sedan--213---2017-present--e-300-esr7131049 703 wtq @ 6ECU+ Upgrade 540HP 705LB FT Gains: +105HP +262LB 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