Quote:
Originally Posted by digital rules
Do the RPMs drop below 1100 when dropping into 3rd gear? If not, you should still be in DFCO.
You may need to fine tune the injector cutoff setting of the Ultraguage if DFCO is not registering correctly. See page 47 of the owners manual.
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My page 47 is blank. But on page 37, my copy makes a statement about how the value used to establish DFCO for a given vehicle only "represents a best estimate." They note that each car manufacturer "has their own algorithm for injector cutoff."
It also says that the cut off should only be seen during in gear deceleration, but I and some others--one in this thread--see it sometimes when shifting out of gear and letting the engine decelerate down to idle. Often I'll see 999.99 on the instant FE reading at such times.
I'll know better how my car use of the O2 reading to judge authentic DFCO after a couple tanks. I'll report that in my fuel log, and possibly here too if I remember.
