I have a KIWI devices PLXwifi with my IPhone and can do the same things in terms of what the guage does. But I really like the integration of this. It looks nice, and there are no wires exposed or cables or the need to set something up every time you want to use it.
Sure, the cost is not cheap, but given most 1 series cars were $35,000 or more depending on options, so what?
Zeros and Ones, let us know when you get this and how tricky it is to install. I might undertake the project this fall once I get my new car sorted. (the 128i is my practical car... After selling the Elise I found myself short a roadster, so... New Porsche Boxster is on the way from Germany!)