RENNtech ECU Hand Held Tuner (HHT) for SL 500 | R230 | 320 HP / 355 LB-FT | MY2003-2006 mercedes-benz-g-class--463---1990-2018--g-550-esr9191415 218 - CLS 63 AMG

218 - CLS 63 AMG BiTurbo 4-MATIC

Panamera Turbo S

GL 450 (W164) Stock Performance:

RENNtech ECU Upgrade for 166 - GLS 450 BiTurbo 4-MATIC

532 LB-FT @ 4

RENNtech ECU Hand Held Tuner (HHT) for SL 500 | R230 | 320 HP / 355 LB-FT | MY2003-2006 mercedes-benz-g-class--463---1990-2018--g-550-esr9191415 218 - CLS 63 AMGRENNtech ECU HHT (HandHeldTuner) for the 2220 S 500. Up to 320HP and 355 LB FT. Gains: +18HP & +16LB 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