[SS_Storm]

A characteristic of the open-loop controller is that it does not use feedback to determine if its input has achieved the desired goal. This means that the system does not observe the output of the processes that it is controlling. Consequently, a true open-loop system can not engage in machine learning and also cannot correct any errors that it could make. It also may not compensate for disturbances in the system.
OPEN LOOP
Open-loop controller - Wikipedia, the free encyclopedia

I don't trip codes I dont get knocking engines run smoother ect. I really do not think I am leaning it enough to hurt anything.
on a obd2 setup I normally look for a number around 0% fuel trim short and long term than I check the actual engine coolant temp, I test making sure there has been no power loss at any point in the throttle using an accelerometer (belkin)