Dang - I got carried away, forgot to ask what I came here hoping to find: does anybody happen to know what the sensor input logarithm for a 2000 Corolla 1.8 liter engine is. What numerical or other values does the computer co-ordinate in order to adjust mixture, how much does temperature, air density, and other factors contribute, and how is it related, in other words.

This seems to be a trade secret, and although I'm closing in on the equation, it's already become a bit of a pain. I've tried several automotive repair programs without luck. There must be a computer program that reads the computer set-up, then adjusts it when it's screwed up or flummoxed otherwise. Or do you just have always to buy a new one? Deep, dark, secret, it seems.