Originally Posted by
McRat
Just rambling about IAT's in general.
Often the true IAT has nothing to do with what the sensor tells the engine. Sitting on the line in the summer, a Z06 will report over 150degF to the engine when the air going into the engine is only 80 deg.
If cannot relocate your IAT sensor outside the engine bay, you should at least zero out any effects that are in the "stupid range". Anything over 90 degF should probably be ignored. For racing, I zero out all effects of IAT.
The difference it made in 1/4mi ET was .48 seconds.