With the KUFATEC Exhaust Pro you have full control over the behavior of the exhaust system Suitable for: Audi RS3 8Y Control is carried out using the smartphone app "KUFATEC Link" KUFATEC Link is available free of charge on Google Play and Apple App Store ESP button (3x click) Exhaust button (2 sec.) optional radio remote control The following functions are available in the "KUFATEC Link": General diagnostics with CAN packet counter Pin protection Incognito mode (the module is completely invisible after the set time) Software updates Over The Air Factory reset Display of the following information Damper position (open / closed) Engine speed Accelerator pedal position Actual vehicle speed Operating status of the module: Series: Dampers behave as factory Open: Flaps are permanently open Closed: Dampers are permanently closed, but are open when the pedal force is >70% or the Engine speed is above 4,500 rpm Selectable options: Left-hand drive (PR no.: L0L) Right-hand drive (PR no.: L0R) Scope of delivery: Plug & Play cable set module Note: This product is not approved for use on public roads - use for racing purposes only. Sales are only made outside Germany