Sorry but there is such a gauge, a Vacuum Gauge...
Rich
Quote:
Originally Posted by mwebb
if the purpose of your invention is to
"be cheap "
and provide feedback to the driver so that the driver can adjust his / her driving habits to improve fuel economy .
why not just monitor the load sensor , depending on the system the load sensor will be ;
either MAP sensor
or
MAF sensor
at any given condition a lower value on either will result in "better" fuel economy than a higher value .
so the driver adjusts driving habits to keep load value low .
that's it , simple and frugal
K.I.S.S.
it will not function with early ford digital MAP sensors or
GM digital MAF sensors
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