RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-gle-class--167---2021-present--gle-450-esr3392660 but looses the surprising brake-assist

but looses the surprising brake-assist for a more mild mannered alert

Carrera 4 GTS

The RENNtech Exhaust Valve Module is made in Germany

CLS (C 219) 350 [2 Filters Required] (HP: 272 | Year: 04 > 06)

RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mercedes-benz-gle-class--167---2021-present--gle-450-esr3392660 but looses the surprising brake-assistRENNtech ECU HHT (HandHeldTuner) for the 220 S55 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.