http://www.audiowerk.com/
i went there for them to do my car alarm. it was having issues and they fixed it up fairly quickly. they appeared to be pretty knowledgeable. the owner was a really cool guy and really seemed to want to help. if i weren't doing my own audio stuff i'd probably go to them.
although since it is a new car that hasn't been on the market before i think maybe a lot of shops will ask to have it for a little bit longer than normal since they don't know exactly how things may turn out? but i'm not sure.