2018 Audi RS3 TTE700 Unitronic stage 3 93 software
Iroz Motorsport catless downpipe/midpipe
HG-Motorsport BullX EGO-X catback exhaust system
Demonstration between closed/open valve under various driving conditions. The valve system is vacuum controlled and does not utilise the OEM valve control (drive select) unless the CANBUS module is installed. I have opted for a remote to switch valves on/off as it is much more convenient and allows me to have total control over when I want the valves open/closed.
Valve closed is very civilised, similar in sound but quieter compared to factory exhaust open valve. Not noticeable in cabin and has zero drone.
Open valve is VERY loud, the video does not pick up the true volume.
