While I have been waiting on answers to my questions, I went thru the threads you have posted and found some pics of the car and one that I was able to enlarge enough to see some details-----------Amoung possible other factors, the water flow back to the radiator from the front of the intake manifold (looks like 2 -8 lines?)--
as a comparison, stock oem engines have an inch and half or larger upper radiator hose----------

You have entirely too high of under hood temps which cause many factors to change at a rate that a self learning system can't keep up-------------

Now--how about answering my questions----do you have any type of idle air control or are you just using the throttle blades???do you have an inlet air temp sensor???????????Is it any specific cylinder/s that pop?????????????/