Fonzo, I looked on the website but I didn't see the dps by themselves? I will most likely by them if I can get them by themselves. Also, I don't want my car to be annoyingly loud. Do you think it would be too loud if I also gutted the main cats besides putting the dps in and gutting the pre cats? What about back pressure? I want my car to gain performance not loose it?

 

youre gonna have to shoot them an email to get the dp's by themselves. the pre-cats are in the dp so when you buy them youre already deleting the pre-cats. what state do you live in? deleting the secondary(main) cats might **** your emissions. you'll be fine on back pressure. that wont be an issue until you move to a larger diameter piping. the sound however will be a little on the loud side if you gut the main cats and do the dp's with your aftermarket cat-back. you'd essentially be doing a straight pipe turbo-back exhaust.

what cat-back do you have?

 

http://www.audizine.com/forum/showth...exhaust-system

here is a review.

 

o ok, And I live in NJ. Here is the magnaflow cat back I have http://www.namotorsports.net/detail....rt_cd/MG16493/

also, I was thinking of getting dmh exhaust dump valves. What do you think of these? Is it better to have wired or wireless ones? Is it easy to run the wire? Also, if I put these before the secondary cats will I need de-foulers?

 

sorry to post on this so late but I have decided to buy these ss chrome downpipes but are you possitive they will fit on my 2001 a6 2.7t? I dont want to buy them and then have a problem with them fitting.