MPGDuino with Common-Rail diesel?
 

Hi,
can you make the MPGDuino work with a CR diesel? The only problem should be that injector flow is a function of rail pressure and boost (and opening duration), so two more sensors to read.

As long as it complies to the OBD-2, it works. And I never saw any common-rail engine that was not compliant to OBD-2...

From memory the answer is no, an MPGuino won't work on a CRD unless the ECU reports a separate fuel economy signal (as most European diesels do). If you can wire up a second Arduino to process the required inputs and output a suitable signal then yes :)

It has come up before so try a search, but I don't think anyone's actually done it the hard way.