RENNtech ECU Hand Held Tuner | HHT | W463 | G55 AMG Kompressor | 536HP/552LB-FT | 5.5L Kompressor | M113 audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 optimizing air-to-fuel-ratios of the 4

optimizing air-to-fuel-ratios of the 4

0L BiTurbo V12 Engine) Modified Performance:

Diffuser Attachments and Rear Lipp Attachment

176 - A 45 AMG and 156 - GLA 45 AMG

The R1 Performance Package was developed to deliver maximum power running on standard 93 octane gas

RENNtech ECU Hand Held Tuner | HHT | W463 | G55 AMG Kompressor | 536HP/552LB-FT | 5.5L Kompressor | M113 audi-rs4--b7---2006-2008--4-2-v8-fsi-esr4648829 optimizing air-to-fuel-ratios of the 4RENNtech ECU HHT (HandHeldTuner) for the W463 G55 AMG Kompressor. Up to 536HP and 552LB FT . Gains: +36HP & +36LB 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.