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MPGuino works well BUT it is not a scan tool
i have an MPGuino on my steering column , it works very well to display real time FE and trip FE along with the other things it does , on an OBD2 car
a Geo Metro. the VW and Audi have real time FE things in the factory instrumentation .
i do NOT use a vacuum gauge excepting when testing engine condition
imho
for most cars for most users
in it's present form
the MPGuino is the best bang for the buck to determine real time and trip fuel economy
even if the car in question is
an OBD2 car
it is a KISS (keep it simple stupid )tool and it is outstanding
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