I did not get the CT with nav. I asked the the guy at the dealership if I could get it upgraded and he said "no, it comes from the factory that way, but we do send them to a place to get a 3rd party system installed" He gave me the number to their place and the place quoted the "Honda" price which is a lot cheaper than what Honda charges to have it done. The Unit the place uses is the Pioneer AVIC-X940BT. Its a nice unit. My questions are. Have any of you had something like this installed? Does it look factory? does it integrate with all of the buttons? and what happens with the information screen the 2012 CT already has?