Im trying to understand how a stock ECU fuel map works. Does the ECU adjust fuel according to RPM and air flow that has been programmed into the map. What I mean is lets say stock car im just throwing numbers in the air...makes 14lbs boost by 3800RPM. So obviously by factory they would have tuned the MAP to start adding fuel there. Alright now lets say you do some mods that suddenly make full boost 14lbs at 1800RPM. The ECU never saw that much boost down low. Does it just read the amount of airflow and pull the information from the map at the point from where the same airflow used be approached at 3800RPM. Or will it just go lean as hell. Sorry if its confusing but Im trying to understand the ECU logic.