Jfitzpat,
Please tell us which company you work for and the products this company sell. I'd like to know and so do other members. I think it could be of interest to some people here.
More and more recent cars have slow wideband O2 sensors. Can't you get a better estimate of fuel usage by simply combining MAF and AFR. I'd think that would be pretty close to reality. With my Elantra I have set up X-Gauges for average trip MAF and Lambda. So far it's been pretty accurate. I just wish I could have an X-Gauge displaying a result based on 2 PIDs...
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