I'm looking for a cat back system for my 01 S4, I want something thats louder than stock and has a real nice tone, I found Tru-dual 225by autospeedlooks goodbut id like some other suggestions? Links would help alot too thanks.

 

I can tell you the two I am looking at for mine It is either gonna be the AWE, or the Borla
http://www.borla.com/applications/lo..._System/14902/

http://www.awe-tuning.com/pages/shar...mp;PPT=Exhaust

 

I love the sound of the tru-dual.see if this works. Here is a short video clip showing the sound and look of the ASP Tru-dual system.

 

Hope that helpsif you havent seen it yet.

 

Iv got borla and love it. It sounds great to me, and borla is not the loudest out there which i kinda like but its deep and theres no annoying droning. You also get that nice popping noise when you let off the throttle. mmmmmm i miss my audi

Theres TONS of videos on youtube of people reving their s4's just so you can hear the exhaust. ASP is certinly nice, but just FYI in the vid he has gutted downpipes, which make it sound a little more agressive. AWE has a good reputation, and the twin 1 has only 1 muffeler so its probably louder than some others. Also Milltek makes exhaust and downpipes which are definitly worth checking out.

While your at it id also highly reccomend piggy pipes from www.vastperformance.com they offer many of the benefits of new downpipes at a fraction of the cost.

Personally i say Borla but its all up to you.

 

i have the borla cat back and it's sounds awesome. i recommend it. when you punch it , it really has an amazing sound. had my brother drive up and down the street just to hear the sound! agree with HP Addict with checking the youtube vids.

 

do thoes piggy pipes fit right on with out any mods or extra parts needed? do they also have recievers for the o2 sensors?