Log Decel fuel cut and see if it's going in and out of fuel cut when the issue is occuring. What is most likely happening is the load/rpm/tps values that setup decel fuel cut are most likely off and causing the bucking at light throttle cruise. I'm willing to bet the load/tps setting for decel is not right and it's cutting fuel too early.The only issue I have relates to a slight surge/pulse when cruising between 50 - 60 mph. I've data logged all the parameters that I felt may be causing it but haven't been able to isolate the source of the problem. There are no tuners around me for 100's of miles let alone one familar with the AEM. I'm half toying with the idea of taking a late spring drive (2000 mi) to have Bob Kurgan give the car a final tune. The car is a SN95 (94 GT AODE). Engine easily spins to 6500 rpm without issue but I have set the AODE shift points at 5600.