I passed readyness and emmisions with my high flow cat. If you buy high quaility you should be ok, but not positive on a 3.0. I've only heard of people using universals on american cars and trucks. In the end the cost to fitt them at a muffler shop my save a few $$$. I believe they were offering universals on ECS.com. Here you go:
http://www.ecstuning.com/Audi-B6_A4-...ust/Universal/
You would still need to decide on how to attach it to the ystem since your oem piping is flanged and these are straight on the end and would either need couplers (flanges removed) or flanges made and welded
Reply With Quote
Bookmarks