Mike just tuned my car on Friday. The whole process was incredibly easy. 2011 e90 zcp running 231e with Akra Evo and delete-r. Before the tune I was completely happy with the car but don't think the neighbors (shared common walls in garage) really cared for my morning start up so main motivation was cold start delete.
Removed delete-r and Mike updated to 240e then his stage II tune.
Cold start gone! What I wasn't expecting was such a dramatic increase in smoothness. The car drives so much better now. I didn't think there was much room for improvement but it really is drastic. Also seems to pull harder but don't have dyno or timeslips to compare for real results.