How to make a blow off valve make the "swoosh" sound on a Audi a6 2.7 twin turbo?

i installed them, and they are adjustable ones and they should make some sound but they dont.How to make a blow off valve make the "swoosh" sound on a Audi a6 2.7 twin turbo?Fool. The Audi engineers designed the turbo system to NOT HAVE BLOW OFF VALVES. Go visit www.quattroworld.com and get ridiculed by true and knowledgeable Audi enthusiasts. You might also learn a thing or too. If you really want that silly sound sell your A6, buy a WRX or STI and call it a day.