Thx for responce. I wrote to Akrapovic company about exhaust system to RS5 and they told me: "It is on the wish list for 2012. Wait for confirmation...". I'll wait for news and after that i decide what to buy, Akrapovic or HMS. . When do you have a trip to Czech Republic with RS5 (HMS) get me know, i'll take you to coffee :P, i really want to see HMS live.