Hello to all, I hope I'm not wrong section.. I ? been asked to build an interface that makes the log of the fundamental parameters to consider when you map a drive to the gas; now I with the gasoline I'm not to zero, but below zero, for which I would like to ask if what I have managed some time to understand from the various posts on the subject ? correct. If not I get it wrong, do I need to acquire N? rpm, AFR, exhaust gas Temperature, and load, right? the load, the control unit detected by the potentiometer of the throttle valve? they are totally out of the way?