How do I get an air/fuel mixture reading from the Autotap diagnostic tool? My guess is that I would need to read the O2 sensors, but they change from high to low so fast that they don't seem to supply any useful information. Yet the computer supposedly uses the readings from these two sensors as well as others to determine the correct air fuel mixture so it stands to reason that there must be a way to log data from the sensors and then calculate the air/fuel mixture in a spread sheet. Anyone ever do something like this? I’m getting ready to add a procharger to my 96 Z28 and I want to be careful not to run into a severe lean condition during WOT.