If you want to see the full potential DO NOT run the blower on high.
That is good for moving a bunch of air but not the best for cooling it.
Let the system run for at least 10 minutes to stabilize it.
Put the fan on medium, recirc and dash vents only. Insert thermometer
in a center dash vent. On a good day, you should see low 40's...maybe
even high 30's.