I'd have to dig through the thousands of pages of EPA standards but I seem to remember reading that in decel fuel cut the vehicle should go into open loop. In fact I think there is even a status bit for it in the mode 1 requests.
For accel enrichment I believe it should be the same deal but not 100% certain. I haven't found a big need for this because accel enrichments usually involve a stab of the throttle and a corresponding jump in load so the settling time passes before the values are used. In any event the script is quick and dirty but quite effective. Any chance you could try to log such a thing to verify? I have not had any luck using me7logger on this ecu.
accel/decel is not just pedal position change. It refers to increasing/decreasing load (req or actual)
fuel cuttoff is an entirely different topic, as is open loop fueling... in general increasing load fueling will NOT go open loop, except if req lambda<1 (BTS, LAMFA, etc).
