RENNtech ECU Upgrade | G 65 AMG | W463 | 6.0L BiTurbo V12 | 670HP/740LB-FT | M279 audi-s4--b9---2017-2024--3-0l-turbocharged-v6-tfsi-esr1699755 Up to 582HP and 752TQ

Up to 582HP and 752TQ

GLS 450 BiTurbo (X166 - M276 Biturbo 4-MATIC Engine) Stock Performance:

GTS Coupe (MY2021+)

The functionality of the Rear Diffuser is fully optimized when combined with the RENNtech front splitter

RENNtech Pre-Preg Carbon Fiber Rear Decklid Spoiler

RENNtech ECU Upgrade | G 65 AMG | W463 | 6.0L BiTurbo V12 | 670HP/740LB-FT | M279 audi-s4--b9---2017-2024--3-0l-turbocharged-v6-tfsi-esr1699755 Up to 582HP and 752TQRENNtech ECU Upgrade for 463 G 65 AMG. Up to 670HP and 740LB FT. Gains: +35HP & +104LB 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