RENNtech R3+ Performance Package | S 63 (S) AMG | W222 | 1017 HP / 871 TQ | 4.0L V8 BiTurbo | M177 | MY2018 - 21 mercedes-benz-g-class--463---1990-2018--g-550-4x4-biturbo-esr1493681 37% more fuel flow than

37% more fuel flow than stock

most kits take a total of an hour or less to install with basic hand tools

We have found the new M256 engine stock performance numbers vary from the baseline figures claimed by Mercedes Benz

Our ECU tune offers the biggest performance gains on the market with our dyno results increasing performance from 556 HP and 544 lb/ft torque

Entire cartridge is fine balanced as an assembly

RENNtech R3+ Performance Package | S 63 (S) AMG | W222 | 1017 HP / 871 TQ | 4.0L V8 BiTurbo | M177 | MY2018 - 21 mercedes-benz-g-class--463---1990-2018--g-550-4x4-biturbo-esr1493681 37% more fuel flow thanR3+ Performance Package for Mercedes AMG S 63: ECU Upgrade (HHT), Stage 2 Turbo Upgrade, Downpipes, TCU, CPC, Fuel Management System, BOV, EVM, BMC Air Filters The Mercedes W222 S 63 AMG comes with the newest engine fully developed by AMG, the companys Affalterbach based performance division and long fabled engine builder. The result is nothing short of spectacular and the 4. 0L V8 BiTurbo engine is an incredible platform to build performance upon.