Quote:
Originally Posted by johnlvs2run
Did using the WAI improve your average mpg?
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Quote:
Originally Posted by jeff88
How's your MPG at the pump?
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Funny you should ask... I just got home from the pump... 59.65mpg, which historically is below normal for my car. But that's not the way to reads the number because I have been reporting in my fuel log for a month or two that I have scaled back my hypermiling. FWIW, this tank is higher than the last, and the wheel skirts and WAI only were installed on the last half of the tank. Though, that does not prove the mods are the reason for the increase. No "post hoc ergo propter hoc" fallacy here!
On the AFR reading... if I understand, even though my UG is saying 6.2% lean long term fuel trim, the car is running at stoich but the injectors are pulsing for shorter durations
than the OEM fuel tables normally would have them pulse. That last phrase is the key, because it means I am at stoich and using less fuel than normal. All the throttling and pumping losses reduction benefits are presumably still real. It is both less fuel and lower pumping losses (theoretically). Got it. Thx.