Ok, Cool. So to help me better understand, let's put this to use in a real world situation. For example in the below picture. This is where I have been at a cruise on flat ground going around 60mph. Then I matt the skinny pedal and the fuel pressure overshoots and undershoots initally and then smooths out till the truck builds boost and my Boost Fuel Limiter table allows full fueling. Then actual rail pressure dips down for a moment but recovers. At the time the rail is recovering, I see a trend in the command and actual dutycycle %. Just not sure if my rail is really draing or something is funky in my P.I.D. or base dutycycle causing that now.
Would the erratic saw tooth pressure trend be a situation where dutycycle is being respond to too fast, or not fast enough. And for the situation when boost builds and is fueling heavy, would this be a case where the 3D dutycycle table would play into?
Thanks,
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