Check out CES Motorsport. I just got dyno'd there so I didn't have any actual work done. I got a great impression of the place though. Fairly small, but tons of BMW work. It must be like 80% or more of their business.
2009 335i M-Sport: BMW Performance SSK/pedals/ spoiler/suspension/rear diffuser, 35% tint, JB4, AFE DCI, Meth Injection, Ceramic coated VRSF Downpipes, ER Chargepipe, DTEC Angle Eyes, LED Interior and Reverse Lighting, Shift Light & Low Meth Light inside Rear View Mirror Clown Nose