We can fully install (retrofit) a double din sat nav system into the BMW e90 E91 E92, the finish is superb. We fully integrate with the original steering wheel controls (including the phone button to answer call!). All factory parking sensors continue to work. And most important the car will NOT HAVE any errors on the diagnostic systems when you visit BMW for a service. This is very important as no updates or servicing of car can be completed if installed incorrectly!
We have a video on YouTube that clearly demonstrates how this installation would look and work in your BMW. Click HERE to see it in action!