Hi guys,

A friend of mine in antarctica wants to know something about stock, bigport 4AGE ECU's.

How exactly do they *work*? Do they use the 02 sensor until XX amount of throttle or XX amount of revs are met, then switch to a pre-set "map"? Or do they use a pre-set map all the time?

Do the ECU's "learn" or are they "adaptive"?

Gurus feel free to join in.