First, photos. Then we'll discuss the testing.
My Scion's air filter box, IAT sensor (I presume), and intake piping.
This is where my air intake was, in front of the battery, behind the radiator. I
connected my WAI over the 3" diameter plastic pipe that looks like a little horn, and snaked it back over itself. I had to remove the battery to get the WAI tubing into this tight compartment spacing.