I have installed the Bimmertech MMI into my 235i and love the way it works. I ordered it to be able to add an OEM style back up camera. It also has inputs for 2 HDMI, AV input and a front camera input. the system is seamless I didnt use the Bimmertech front camera at over $200 i picked up a $20 backup camera that could be switched to a front mount by cutting 2 wires to turn off the backup lines, and mirror imaging, works like a charm. I also upgraded the display to an 8.8inch out of a 3 series. I didnt spring for the carplay at the time i got the MMI, so I picked up a wifi mirroring unit from EBAY that will mirror android and apple systems and and run this through the MMI. the only problem i noticed was when pushing videos of people talking there is a slight audio lag. other than that when running google maps or streaming music everything works great.
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