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Nice work, great looking graph
That really shows how the DFCO subroutine is triggered when the throttle position sensor hits the idle switch. The closed-loop idle circuit has huge control authority to regulate air and fuel to keep the motor running, and will use whatever fuel it needs to keep the speed within idle range.
By blipping or lifting the throttle off of the idle switch you have taken it out of closed-loop idle mode into POT mode.
On the old Bosch DME system the controller used countdown timers on interrupts to control the length of DFCO and also used them to create an 'accelerator pump' action to ramp up the fuel on WOT.
You could really see some gains if you could change the DFCO timer to a longer value--has anybody reversed that ECU yet?
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