RENNtech ECU Hand Held Tuner | HHT | R230 | SL55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2008 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 Rated by RENNtech: 605 HP

Rated by RENNtech:               605 HP @ 5

684 LB-FT @ 3

CLASS S (W 221) 350 [2 Filters Required] (HP: 272 | Year: 06 > 11)

Dyno measured by RENNtech (peak):               617 HP @ 5

Ferrari Portofino

RENNtech ECU Hand Held Tuner | HHT | R230 | SL55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2008 mercedes-benz-amg-gt--190---2015-2017--gt-s---2015-2017--esr1356663 Rated by RENNtech: 605 HPRENNtech ECU HHT (HandHeldTuner) for the 230 SL55 AMG Kompressor. Up to 528HP and 552LB FT. Gains: +35HP & +35TQ. 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.