RENNtech ECU Upgrade | S 65 AMG | W222 | 670HP/840LB-FT | 6.0L BiTurbo V12 | M279 | MY2018-2020 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 predictable results which is a

predictable results which is a consistent

72 mph W213 - E63 AMG S Sedan R2 Package w/Launch Control

135 HP / 221 LB-FT

and turbo upgrades

RENNtech ECU Upgrade | S 65 AMG | W222 | 670HP/840LB-FT | 6.0L BiTurbo V12 | M279 | MY2018-2020 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 predictable results which is aRENNtech ECU Upgrade for 222 S 65 AMG. Up to 670HP and 840LB FT. Gains: +49HP & +102LB 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