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Old 03-24-2014, 12:30 PM   #6 (permalink)
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)
Thanks: 32
Thanked 146 Times in 97 Posts
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.

Learn from the mistakes of others, that way when you mess up you can do so in new and interesting ways.

One mile of road will take you one mile, one mile of runway can take you around the world.
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