Loud blowoff valve

[LunarWolf]

Try this..... Perfect!

http://www.ebay.co.uk/itm/SABRE-EDV-...item4ab59d634b

[UrS4boy]

Does it make sense to install the BOV ?

DriftinJo gave you the correct answer. BOV = ricer boy PLUS it is technically not a good idea, as he suggested. Here are the reasons why:

http://forums.quattroworld.com/s4s6/msgs/20994.phtml

[driftin jo]

It's not a good idea to fit an atmospheric BOV to your car unless you are running an after market ECU, the standard motronic system is MAF based and if you dump to atmosphere the car over fuels when you change gear and you will get bore wash etc, not good.
Why do you want to draw attention to you car by making it sound like a rice racer anyway ?

[Deception]

Hi guys. I'm looking for a loud blowoff valve for my S6 AAN. The car is currently stock but it will soon put in a K26/K27 hybrid turbo. I'd like the BOV to produce a sound similar to this one: http://www.youtube.com/watch?v=-DaCsDp1m8U.
Does it make sense to install the BOV while the car is stock or should I wait until the turbo is Installed?
Please suggest a similarly sounding BOV that is not a cheap piece of junk and doesn't cost an arm and a leg either.