Only suggestion I have is for the cat efficiency test. The pcm will drive the fuel system purposely lean or rich to compare the upstream and downstream wave pattern of the O2 sensors to make sure they do NOT match. Usually this will occur after a specified time under a steady throttle position. You will not feel it but it will happen. I would suggest getting in a level highway (if available) and setting the cruise control. If accel or decel is called for (outside an allowable parameter) the test will not run. I also dont know if have a scanner plugged in alters this at all. I would (here) get on I-95 set the cruise and drive for 30 miles. Exit the highway, shut car off wait 30 seconds (a little excessive I know, but what i would do) restart car and return on the same road.
Good luck
Curt