[Ed Wright]

Art is correct. The computer DOES NOT make spark adjustments going down the track. It will only make fueling adjustments going down the track if you put it in closed loop, which does not work well. I have yet to see one run as well at WOT or as consistently, in closed loop. They also do not make diagnosing a problem easier, data loggers do. Many carbureted cars now have data loggers.

Is "changing jets" or the timing easier with an EFI car? Sure.