RENNtech ECU+ Upgrade | C238 | E450 BiTurbo | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 | MY2019-2020 audi-s7--4g---2012-2018--4-0l-v8-twinturbo-esr9168828 This highly integrated prepreg carbon

This highly integrated prepreg carbon fiber spoiler compliments the sophisticated and refined S exterior design language

Stock: 542 HP | 502 LB-FT

Please note that the Mercedes M177 engine performance when measured

Lowering Range: up to 1

RENNtech ECU+ Upgrade | C238 | E450 BiTurbo | 392 HP/463 LB-FT | 3.0L V6 BiTurbo | M276 | MY2019-2020 audi-s7--4g---2012-2018--4-0l-v8-twinturbo-esr9168828 This highly integrated prepreg carbonECU+ Upgrade Up to 392 HP 463 LB FT Gains: +53 HP & +78 LB FT RENNtech M276 Biturbo ECU Upgrades are TV approved! 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.