I just bought a01 A4 1.8t Quattro, looking for other people who have audi's in the area to get suggestions on maitence/mods, part shops, and the best place to get it worked on if needs be.

 

Hey there, I have a 98 A6 Quattro. IMOthe best place in town to get work done on your car is Road Star Imports. It's located on Classen right south of Belle Isle bridge. However, the owner is usually one or two techs deep at any given time so I would call him first and make sure he knows you're coming so he can take a look or work on your car. Otherwise, you might end up having to leave the car there overnight.
He did my valve cover job for dirt cheap compared to the competition.

Good luck!