efi&mpg readout possible?

[scott thomas]

Why not measure the fuel pressure differential? The greater the
difference between fuel pumped and fuel returned = greater
consumption. Sounds alot easier than it probably is?

I was figuring the throttle potentiometer could be used for this
reading.

---- Begin Original Message ----

From: Marc Swanson <mswanson at sonitrol.net>
Sent: 17 Apr 2003 17:23:19 -0400
To: Nate Stuart <newt at newtsplace.com>
CC: scott thomas <scott at dreamtheater.zzn.com>, quattro at audifans.com
Subject: Re: efi&mpg readout possible?


> > If you _really_ want to get a more
> >accurate reading you'd have to get real creative and design some
kind of
> >circuit that would take in things like the map signal, intake
> >temperature, etc and calculate the MPG using the engines volumetric
> >efficiency as part of the equation and then producing a signal that
> >would replicate the output of the potentiometer.  In my mind,
nowhere
> >even near worth the effort :-)
> >  
> >
> Wouldn't it be easier to just read the inj. pulse width, fuel
pressure,
> and speed?


Errr.. um.., It appears I must have been trying to calculate
horsepower
in my head.  why yes it would be much 'easier' to do it this way :-)


--
-Marc
87' 4ktq
88' 90q
www.mswanson.com/audi



---- End Original Message ----




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