RENNtech | HHT | ECU Upgrade | SLS AMG GT | C197 | 593HP/495LB-FT | 6.3L V8 N/A | M159 mercedes-benz-s-class--220---1999-2006--s-600--1999-2002--esr7119407 Up to 965 HP and

Up to 965 HP and 817 LB-FT @ crank with 93 Octane Fuel

CLASS E (W 212) 350 4-matic [2 Filters Required] (HP: 272 | Year: 09 > 11)

RENNtech ECU Upgrade for the Mercedes-Maybach 222 - S 600 BiTurbo V12

Up to 517HP and 485LB-FT LB-FT

RENNtech | HHT | ECU Upgrade | SLS AMG GT | C197 | 593HP/495LB-FT | 6.3L V8 N/A | M159 mercedes-benz-s-class--220---1999-2006--s-600--1999-2002--esr7119407 Up to 965 HP andRENNtech HHT ECU Upgrade for 197 SLS AMG GT. Up to 593HP and 495LB FT. Gains: +10HP & +14LB 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