ok soo i heard some one talking about this exhaust that uses plates that you can remove to get it louder or quieter
and idk what kin dof exhasut it is soo i was hoping someone could help

also would it be a good idea too run strait pipes no cats or anything until this muffler or not....cause i always wondered what a strait pipe audi
with no mufflers sounded like ...soo youd be able too since you could take out all the plates and have basically pipe lol
i dont have emmisionns btw i live in fl lol

 

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_757985_-1_11529
Isn't this another one?