this si very well made video marketing wise. but the sound of it and the functionality is beter and exists since over 2 years from HMS tuning. I am resellign these products and have sold a lot of these exhausts to RS5 owners.... it is the best exhaust around fro RS5s.... no doubt.....

http://www.youtube.com/watch?v=JSlfhZpXhT0
http://www.youtube.com/watch?v=BFH4dxr35bk

when closed its calm, when its open irs pure FERRARI V8 sound. its simply unblievable you are able to get that sound from this engine... I perosnlaly changed two tims exhsusts on my RS5 and once HMS was on, it was IT.... impossible the change or find better