Quote:
Originally Posted by Daschicken
Scanguage accuracy is limited, given that it assumes a constant AFR. The gauges and access to engine data is nice, but having something that taps into the actual fuel injector pulses like an Ultragauge would be great.
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UltraGauge calculates fuel economy the same way the ScanGauge does.
(No idea why they do it this way. Fuel flow data is in the OBD datastream, use it!)