Yesterday, I did something I hadn't heard others do, so I thought I'd share.
My aeroforce obviously reads intake air temps. And, I have taken real steps to lower those temps, including a GT500 pump and a VMP dual fan HE. But, I wanted to know what temp the air was actually entering my KB intake filter.
For background, Kenne Bell runs its intake down behind the front bumper to get "cold" air. The problem is, the air is turbulent down there at highway speed and can confuse the car if you were to coast at highway speed. So, if I was to push the clutch pedal in at 60MPH to coast to an upcoming light, the idle would get all wacky. The solution last summer was to build a shield around the air filter. Hurts the "cold air" concept some, but it fixed the turbulent air problem. And, as a side benefit, protects the filter if I get caught in the rain.
So, to present day, I bought a Gentex 341 smart rearview mirror. It has a compass and temp readout built in. I then ran the temp sensor to that aforementioned shield and installed it there on the inside of the shield right next to the filter. So, on my rearview mirror, I'm literally seeing the temp of the air 1" from the intake filter.
If you're curious, the air was sitting about 6-8 degrees warmer than true outside temp; the shield cuts out a lot of the outside air and unfortunately does get some of the engine air above it. When I started the car yesterday, it read 73. As I drove around, it settled in right about 79 with some +- fluctuation. My IATs hovered in the 110-120 range.