RENNtech ECU Upgrade | S 600 | W222 | 582HP/752LB-FT | 6.0L BiTurbo V12 | M277 | MY2015-2017 mercedes-benz-s-class--s222---2014-2017--s65-amg-biturbo-4matic-esr7187941 The RENNtech upgraded M278 now

The RENNtech upgraded M278 now produces up to 540 HP and 705 LB-FT at crank

Upgrade the look of AMG GT Black Series with RENNtech Carbon Fiber Fender Extractor Inserts

RENNtech Carbon fiber air box for the Mercedes V8 Kompressor engine (M113)

The RENNtech Power Module is contained in a CNC machined 6061 aluminum enclosure with pre-labeled wires and connectors

Our experience

RENNtech ECU Upgrade | S 600 | W222 | 582HP/752LB-FT | 6.0L BiTurbo V12 | M277 | MY2015-2017 mercedes-benz-s-class--s222---2014-2017--s65-amg-biturbo-4matic-esr7187941 The RENNtech upgraded M278 nowRENNtech ECU Upgrade for 222 S 600 BiTurbo V12. Up to 582HP and 752TQ. Gains: +59HP & +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