We tuned the car, then a few days later ran it up again and the AF curve was the same shape, but from say 12.5:1 average to 13.5:1, we were puzzled with what was going on, stuffed around a bit and cleared the computer and went back to normal, so not sure what it was "self learning" or if it can really do that but something was a bit weired. We asked pete about it and he said he never seen it before and few other people said the same, but i don't know how many people bring it back to redyno it to check. Mind you seems to be fine again now?