I was wondering how I could measure the rate of fuel consumption, namely on my cars but I also had a few other applications for it If I ended up buying a physical flow meter of some type.
Is it possible to read this information off the ECU? I'm guessing yes but it will probably require an proper OBD system that would be pretty darned expensive. I looked around a bit and found a lot of irrelevant info and some rather expensive lab quality flow meters. Fuel type is petrol although if there is one that does diesel too that would be nice (but not really necessary)