RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 Its unique three-piece design incorporates

Its unique three-piece design incorporates a single center section replacement for the OEM splitter as well as two additional side pieces which wrap around the entire front fascia and create a unique look unlike anything else on the market

to an astonishing 669 HP and 734 lb/ft at the crank

R-Line Comparison: Vehicle Package HP Gains TQ Gains W167 - AMG GLE 63 Stock

The maximum power number reached with the RENNtech ECU+ Upgrade for the W463 - G 550 is up to 528 HP and 558 LB-FT

The maximum power number reached with the RENNtech ECU+ Upgrade for the W205 - C 63 AMG is up to 601 HP and 657 LB-FT

RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 Its unique three-piece design incorporatesRENNtech ECU Upgrade for 211 E 550. Up to 402HP and 405LB FT. Gains: +20HP & 14LB 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 takes only a few