RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 RENNtech's GT-S adjustable lowering kit

RENNtech's GT-S adjustable lowering kit offers not only overall improved aesthetics and an aggressive vehicle stance

15 sec 127 mph X290 - AMG GT63 R1 & R2 Package w/Launch Control 2

C218 - CLS 63 AMG 4MATIC (MY2014)

CLASS R LONG (W 251) 500 4-matic [2 Filters Required] (HP: 388 | Year: 07 > )

911 - 996 CABRIOLET 3

RENNtech ECU Hand Held Tuner | HHT | W220 | S55 AMG Kompressor | 528HP/552LB-FT | 5.5L Kompressor | M113 | MY2003-2006 audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 RENNtech's GT-S adjustable lowering kitRENNtech 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.