I went to DBC Performance based on recommendation from a friend that has all his work on his A4 done by them. Berk is really cool guy, very personable, his expertise at the shop is suspension work.
I went there when I first bought my car used, for spark plugs, brake service, and oil change which were all completed with no issues (all I now do myself). I'd recommend them for any aftermarket work that most of the European service shops on my side of town frown upon....
335i - BMS JB4/BMS DCI/Helix FMIC