I had Alex at Alpine Motorsports code my car remotely, and it is awesome. Read my full review here:
http://e84.xbimmers.com/forums/showthread.php?t=1012592
I had these changes made:
• Unlock doors when engine is turned off
• Removal of iDrive Disclaimer Message
• Removal of Amber Headlight Sidemarkers
• Digital Speed Display
• Real time MPG in gauge cluster
• Set sunroof to close when rain is detected
• Enable DVDinMotion
• Disable iDrive Camera disclaimer
• Fold in Mirrors immediately when doors are locked
Highly recommend having it done.