Hey, I'm researching the same as i'm planning to upgrade to Nav on our new 08 X5. So far haven't found much info... Do you have a complete parts list for the Nav retrofit? If you do it would be great if you can hook me up. All i know is that once you install all the parts you need you will have to take the vehicle to the dealer for a complete recode.

Now, did the 16:9 screen worked just plug and play?

btw, this is the thread i've started about the same thing. The retrofit package for nav mentioned in the thread is comming up as a bad part according to the parts people at the dealer... like i said not much info otherwise... so lets combine resources on this!

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Garage:
current: '03 Audi A4 1.8tq GIACFXK04 (mine)
'08 BMW X5 3.0i (wife's)
past: '92 BMW 850ci, '97 BMW 540i RIP (mine)
'93 MB 500sel, '94 BMW 740i, '97 BMW 740iL, '01 BMW X5 3.0i, '06 BMW X5 3.0i (wife's)