I'm curious to know if you can add navigation / I-drive after the fact? I mean, can it be added at a later time after you get your car?
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I asked the same question a while back, and the replies noted that with enough money it is possible but would be very expensive (dash would need to be replaced, etc.)
Reply » Stupid Question??????
It's probably cheaper (take the depreciation loss) to trade it in on an E90 with nav.