why do I have to change the fueling with the afc all the time. it will idle fine then about a week will go by and the settings need to be changed, because the idle get progressively worse. its like no matter what i do i have to change it. then if i reset the ecu and keep the settings in the afc the same, the car will not even run.
i know im not very clear with my question, i just dont know exactly how to ask it.
why does it seem like im fighting the factory ecu so much???