Our Chrysler Town and Country minivan had a similar digital reading
in the over the head "on board" computer setting.  it too, was a
little optimistic, but relatively speaking it did the same thing as a
needle-based vacuum gauge.  My add on VDO vacuum gauge on my van is
getting old enough that the needle does stick in spots, but
eventually I will replace it.

DM&FS

At 09:08 PM 11/21/2007, Tabe Johnson wrote:

>A miles per gallon gauge is a common instrument in
>BMWs.  It is hooked to the ECU and the speedometer,
>and reads the size and frequency of the injector
>pulses.  It's kinda fun to play with - your instantaneous
>mileage can go from infinite (downhill with throttle
>closed) to less than 5MPG (full throttle acceleration
>in first)
>
>I wish Vanagons had that.  (van content)
>
>tabe johnson / 87 westy