RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mclaren-765-lt-esr7899147 No permanent modifications to the

No permanent modifications to the vehicle are required

The maximum power number reached with the RENNtech ECU+ Upgrade for the W463 - G 550 BiTurbo is up to 523 HP and 583 LB-FT

6 GT3 (HP: 415 | Year: 06 > 11)

The full kit consits of 4 dive planes

Available in Black and White

RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 mclaren-765-lt-esr7899147 No permanent modifications to theRENNtech 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.