RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 Crank Performance Numbers are calculated

Crank Performance Numbers are calculated with a 16% Drivetrain loss on 4MATIC+ vehicles

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

CAD surfacing

RENNtech M133 ECU Upgrades are TÜV approved

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

RENNtech ECU Upgrade for E 550 | W211 | 402 HP / 405 LB-FT | MY2007-2009 audi-s8--d5---2019-2020--4-0l-v8-esr9872235 Crank Performance Numbers are calculatedRENNtech 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