During different engine loads as per vaccum how rich or lean each fuel trim reported.

This shows with all the results in all replies above just how much information is with just use of a OBD-II scanner, how differently we spend a bunch of time analyzing each car we custom tune before we even begin the tuning process.

This also gives you the facts as how the car is to the so called mods installed could in fact be a negative, does not perform as to the marketing hype by vendors and how to tune to make everything in powertrain to work together to allow best performance yet keep engine safe.