So since my readings are hot and i think it may be cuz of the PCV, what about moving the sensor?
Would it work to move it to the intake pipe? Or can I move the PCV connection?
Theres a nipple that goes into the first cylinder from the f23 manifold. Its plugged. Would it throw the engine off if I routed the PCV to that nipple?

My other concern is that the intake valves are messed up or need to be adjusted as after a rev, the idle is delayed at 1000 rpm for a second on top of the hot IAT sensor readings. Could hot engine air be going back into the intake?

 

First step is to check whether PCV system is working as intended. Hose should be clear, PCV should rattle when shaken. You should get a sharp click when you pinch PCV hose w/ engine idling.

My caution was concern that an open (no check action) PCV might pull too much crankcase vapor into intake, causing high IAT input.

good luck

 

I actually replaced the PCV yesterday to see if that was causing the issue. I think it is partially that. But since this is an f23 IM on an f22 there may be issues with the IAT sensor location as well as crankcase gas inlet into the IM that the car is not tuned for.
I could just stick the IAT sensor into the intake pipe right?

 

What's the resistance of the IAT when the engine is hot?

 

I did not measure the resistance. Although perhaps I should consider heat wrap...
What I did was measure the intake pipe just before the TB and the IM temps. 105 at the IM, 50 degrees at the intake pipe. Its jumping 55 degrees inside that intake manifold. I have two functioning IAT sensors too, so I tested them hot and cold.
Driving the car with it measuring almost ambient temp at the intake gives it more performance.

I also tested to see if the issue was from hot crankcase gases. This wasnt the case. So something else is going on here...