Quote:
Originally Posted by MetroMPG
I'm sure you already know the SG doesn't factor lean burn into its MPG calcs, right? The Guino does, however.
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I don't really know much about the internals of either, but was under the impression that they apply various algorithms to estimate fuel consumption from the OBDI-accessible info, while the Honda OEM display computes fuel consumption by adding up the amount of fuel the ECU tells the injectors to deliver. A lot more accurate, but hard to do unless you're the one writing the ECU code.