To people that have installed this:
When you start up the car and drive it with the bypass on and the a/c off and then turn the bypass off, does the vent temperature go up right away?
I tried it and it doesnt seem to make much difference. Also if I drive and have the bypass off and then turn it on, it doesnt seem to make the vent temperature any lower, or does it take a while for the temperature to cool down. This is without the a/c on. Or does the bypass work best when the AC is on?
I tested it once with the a/c on and drove for 50 miles with the bypass off, 50 miles with the bypass on, and then 50 miles with the bypass off, and didnt notice much of a change in vent temperature, but I was heading south and the outside temperature probably was 15 degrees warmer at the end of the test and the sun was constantly beating down on the vent area. I noticed that the temperature in the car with the roof on and the windows up can get to around 120 degrees, when it is sitting in a parking lot, so maybe starting from a garage temperature in the shade at 80 degrees into the hot sun at 95 degrees makes the vent get that much warmer. Or maybe the a/c cycles off and on at different times to prevent freezeup and maybe I was getting a temperature reading from when it wasnt cycling on.
I have a Radio Shack indoor/outdoor thermometer and the outside temperature only updates once a minute and noticed that when I stick the outside probe in hot water, it takes about 10 minutes for it to return to the normal temperature so I may not be getting up to date figures, and the outdoor temperature always reads about .9- 1.1 degrees lower than the indoor room temperature when it is left in a room with the outside probe next to it.
I also noticed that when I play a CD, the radio generates a lot of heat and noticed that the radio is right under the vent, so maybe this was increasing the vent temperature too since the radio might have heated up as I was driving.
I will have to try it at night when the sun doesnt hit the vent with the radio off and get a new thermometer to see if that is the problem. I noticed the little lever moves, so the valve is working.