RENNtech ECU Hand Held Tuner (HHT) for S 65 | W220 | 670 HP / 840 LB-FT | MY2006 mercedes-benz-cl-class--216---2007-2014--cl-600-esr6559467 5L V8 Supercharged) Stock Performance:

5L V8 Supercharged) Stock Performance:

RENNtech’s engineering and design teams had one clear objective

and machined logo accents

720 LB-FT @ 3

RENNtech ECU Hand Held Tuner (HHT) for S 65 | W220 | 670 HP / 840 LB-FT | MY2006 mercedes-benz-cl-class--216---2007-2014--cl-600-esr6559467 5L V8 Supercharged) Stock Performance:RENNtech ECU HHT (HandHeldTuner) for the 220 S 65 AMG. Up to 670HP and 840 LB FT LB FT. Gains: +66HP & +102 LB 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.