cool. You may be able to "see" what is going on by adding the O2 voltage gauge to your front page for a bit. Once your car is warmed up it will bounce around a bit as the computer corrects the fueling. When you decelerate you will see it go into open loop (little circle thingie on the top right) and the o2 will go lean (0 volts I think).
A side note that I should probably post in instrumentation as well. If you do little to no EOC or P&G where the car's computer is going back and forth from open and closed loop what follows really does not matter. If you are operating in open loop more frequently (such as after restart from EOC or P&G) you may get some odd readings.
I tinkered with Injector Cutoff (what Ultra Gauge calls DFCO) for a while and verified what I was seeing on the ultra gauge with my mpguino just tapped into the injector signal. Ultra Gauge can not "see" what the injectors are doing. It
can see open loop and throttle position. So by knowing that your foot is off the throttle and the engine is in open loop it knows you are in Injector Cutoff but only after it has gone into close loop once. If you pulse and glide or EOC on the restart the computer is in open loop mode but Ultra Gauge did not power cycle. UG still thinks the car is being driven "normaly" it sees open loop, with little to no throttle position and "thinks" Injector Cutoff. End result is after an EOC to a stop sign, bump start, get going again shift to 5th and light load cruse to the next coast the UG though I was in Injector Cutoff the whole time (other than the acceleration)
The directions say
Quote:
Injector cutoff is disabled when set to zero, and is disabled by default. To enable Injector cutoff detection, set the value equal
to seven times the engine size in liters, rounded up to a whole number. For example, for a 2.3L engine the value should be set
to 2.3x7= 16.1 17. The value is not crucial and this calculation represents a best estimate.
When enabled and injector cutoff occurs, the Instantaneous MPG will read 999.9, and the Instantaneous Gallons/hour will read
0.0
|
I would suggest if you are seeing this effect, set the value as low as possible with the Ultra Gauge still seeing Injector Cutoff when you lift off. By the directions I should set the value to 14 (2l engine x7) Mine is set to around 4 or 5 now. Ultra Gauge is only falsely detecting Injector Cutoff after EOC restart and idle or very low power settings right after restart. Once the car goes back into closed loop mode all is well.
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