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Old 03-24-2014, 12:30 PM   #6 (permalink)
bestclimb
Smeghead
 
Join Date: Oct 2009
Location: South Central AK
Posts: 933

escort - '99 ford escort sport
90 day: 42.38 mpg (US)

scoobaru - '02 Subaru Forester s
90 day: 28.65 mpg (US)
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my subaru does the same thing. I think it is actually using zero fuel for an instant as your foot comes off the gas it goes into open loop. which means it is disregarding the O2 sensor and fueling according to the fuel maps. at some rpm >~1000 and off the throttle it goes into DFCO.

am looking forward to confirmation or correction on this.
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