You can re-set fuel consumption, etc from the stalk. Everything that worked from the stalk works. You cannot unlock the OBC through the 2 buttons from the dash anymore, unless you hook up the HU in the glovebox.
Not sure about the clock, the Dynavin has it's own time, so I'm using that one. Never used the dash time anyways.

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Stable: e92is, e46 M54B25, e83 N52, e53 N62 - sold, e39 M54B30 R.I.P.