i Want to buy DV's but i dont know what kind to buy . I want them to sound nice a lil loud buy not to loud.I want read good performance .... please help me

 

Read the BOV stickie.
DV's dont dont vent to the atmosphere so theres no sound/Woosh
Bosh 710n's are cheap and very functional, forge 007 will do the same job but cost you more, better on high boost applications, also rebuildable. Hybrids can still cause problems but to a lesser degree.

I had 710n's they worked fine for me, you can get 2 for under $100. When i go stage 3 ill probably get some forge 007's they look sick but are more like $300 a pair. Right now I have a set of black anodized samco DV's but one has a crap o-ring. Might throw em on spring break.

 

ditto on the FAQSTFAFTW.

I have forge dv's. they r good.

 

if you want that BOV sound you bought the wrong car, you needed to get a evo or sti if you want no one to knmow you can kick there *** and have leather then you have the right car.

 

actually...the EVO and STI use a closed loop system just like the S4. there are some DVs that allow you to maintain the closed loop, yet still have a minor blow off. totally pointless in anything but a pure race car, but if you really like that super annoying sound....then here you go

http://www.lltek.com/DBOV_turbo_divertor_blowoff.htm

but honestly...you will be way happier saving your money and getting the 710Ns