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No punching in your mileage - are you kidding? GPS! We all have it! Most of us already use export to split it up onto numerous ports. I say complete integration. GPS and OBD2 are standards, they work, and they work very well! your obd2 data will give you absolute fuel flow rate, so the program could have a fuel consumption needle like in bmws. You just use the injector pulse width, number of injectors, and flow rate of injectors (which is all easy to obtain), compare that to the gps-indicated mileage, and you have on-the-fly fuel consumption rates. The program could alert you of engine trouble codes as well, as it should!
Think about it, we need to replicate and surpass the OEM offerings. We already have the data flowing into our pcs, we just have to show it the right way!
Argh projects like this make me wish I was a programmer instead of an installer....
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