RENNtech | HHT | ECU Upgrade | SLS AMG GT | C197 | 593HP/495LB-FT | 6.3L V8 N/A | M159 mercedes-benz-sl-class--231---2012-2016--sl-65-amg-biturbo-esr8588212 Adjusted setting loaded onto car

Adjusted setting loaded onto car via ODB2 port

With the proprietary RENNtech ECU Tuning the W213 - E63 AMG S 4MATIC+ gains up to +82 HP and +84LB-FT based on power numbers measured by RENNtech

RENNtech ECU HHT (HandHeldTuner) for the 2220 - S 500

Double Wall Vacuum Insulation Maximum temperature retention & insulates hands from the cold

Designed in the U

RENNtech | HHT | ECU Upgrade | SLS AMG GT | C197 | 593HP/495LB-FT | 6.3L V8 N/A | M159 mercedes-benz-sl-class--231---2012-2016--sl-65-amg-biturbo-esr8588212 Adjusted setting loaded onto carRENNtech 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