Active Sound (ASU) from Milltek Sport is an innovative solution that enables user-controllable exhaust sound on vehicles that traditionally lack the desired sound and tone. Suitable for a wide range of vehicles, the system is available for hybrids, EVs, and diesels. The system includes 11 selectable sound files, with volume, pitch, and tone adjustment. User-configurable profiles are controlled via Millteks iPhone or Android app. - 11 selectable sound files - Volume, pitch, and tone adjustment - User-configurable profiles via mobile app - Suitable for hybrids, EVs, and diesels Specifications: - Pipe Diameter: 0.00 - Fitment Time: 1 to 1.5 hours (including removing OE system) - Race Product: No - EMarked: No Kit comes with: - MSVS031: Active Sound Wiring Adaptor for OE - MSVS031 - MSVS028: Active Sound Control V2 with 8 Selectable Sound Files - MSVS028 Vehicle Compatibility: - 2011-2018 Audi A6 3.0 Bi-TDI C7 - 2011-2018 Audi A7 C7 3.0 Bi-TDI - 2019 and later Audi S4 3.0 Bi-TDI B9 Saloon/Avant (Diesel) - 2019 and later Audi S5 3.0 Bi-TDI B9 Coupe (Diesel) - 2019 and later Audi S6 3.0 TDI C8 Saloon / Avant (Diesel) - 2019 and later Audi S7 Sportback 3.0 TDI C8 (Diesel) - 2014-2016 Audi SQ5 3.0 V6 Bi-TDI (Diesel) - 2016-2020 Audi SQ7 4.0 V8 TDI