Milltek Sport 'ValveSonic' Active Valve Control Module - Audi RS4 (B9)

Milltek Sport 'ValveSonic' Active Valve Control Module - Audi RS4 (B9)

Introducing a brand new product line from Milltek Sport - the 'ValveSonic' Active Valve Control Module.
Switching solution that gives you complete control of your vehicle's active exhaust valves. 

This kit integrates with your vehicles canbus control system and allows manual control of the exhaust valves independently of the 'Audi Drive Select' system.