RENNtech ECU Upgrade | Mercedes-Maybach | S 600 | W222 | 582HP/752LB-FT | 6.0L BiTurbo V12 | M277 | MY2014-2017 mercedes-benz-g-class--463---1990-2018--g63-amg-esr9701448 the HSM will be 'married'

the HSM will be 'married' to the vehicle and can only be used with this vehicle

Gains up to: +61 HP | +59 LB FT

ECU+ Upgrade | Up to 601HP / 582LB-FT | Gains: +95HP & +131LB-FT

and 3D-print prototyping in order to fully develop the AMG GT 4-Door Rear Wing assembly

Please note:  Our airbox for the M157 will require modification to the OEM engine cover

RENNtech ECU Upgrade | Mercedes-Maybach | S 600 | W222 | 582HP/752LB-FT | 6.0L BiTurbo V12 | M277 | MY2014-2017 mercedes-benz-g-class--463---1990-2018--g63-amg-esr9701448 the HSM will be 'married'RENNtech ECU Upgrade for the Mercedes Maybach 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.