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Old 01-15-2013, 02:29 PM   #216 (permalink)
RobertISaar
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Join Date: Jul 2012
Location: camden, MI
Posts: 324

MC SBX - '95 Chevrolet Monte Carlo LS
Last 3: 29.75 mpg (US)
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how does the scanguage calculate fuel economy?

two possible methods, one of which is significantly better than the other but requires more information.

method 1 is estimating fuel injected based on airflow readings from the MAF sensor and the target air/fuel ratio.

method 2 is calculating fuel injected based on injector pulsewidth, RPM, injector flowrate, number of injectors and injection scheme to create a fuel flowrate in gallons per hour.

guess which one is more accurate?
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