RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 to an astonishing 669 HP

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

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

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

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RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 to an astonishing 669 HPRENNtech 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