<... pressure drop, and temp change will be on the engine side of the throttle body ...>
True.  But that's at idle, on the ground.  In the air, at or near WOT, the temp drop across the throttle body would be much less.

<... Where are you guys putting your air temp sensors ...>
I'm not even remotely there yet, but I would feed my EFI the temperature in the intake runners since that's what the engine sees.  I would put TIT and compressor outlet temps on the panel if I had enough parameters and display space.
--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T
 
 

Russell Duffy wrote:

Idle at 2000 rpm can generate around 15" of manifold vacuum and that converts to 45 deg F temperature drop.  That is waaaaaaay more than the dew point spread in most places.  A lot of the heat (and therefore temp drop) gets absorbed by the warm environment, but not all.  It is the same phenomenon that causes carb ice. Just a theory ..... Jim S. I've seen the same condensation on my intake when running at low power on the ground.  Now that you mention it, I realize that my air temp sensor is not in the best location.  I have it in the pressurized air box on the outside of the throttle body.  As I understand it, the pressure drop, and temp change will be on the engine side of the throttle body.  Since this can change the temp quite a bit, I bet that's why I have such a difference between the A and B controller (B doesn't use the air temp sensor) at low power on the ground. Where are you guys putting your air temp sensors? Cheers,Rusty (new oil cooler arriving today)