I tried a search, and nothing.
Do you wanna put your nozzle before or after the IAT sensor?

 

It should not matter. The IAT reads the temperature of the air coming in.

 

I know that.
Does the NO2 cool the intake charge enough to where it is a substantial difference in what the IAT "sees" though?

 

Since you belong to "speeddensity.org" can we assume you have a 93 LT1 or an earlier 3rd Gen S-D setup? Are you running a wet system or a dry system?

Yes.... the nitrous absorbs huge amounts of heat when it changes from a liquid to a gas in the intake stream, and could easilly drop your intake charge 50degF (depending on the kind of system you are running and the amount of nitrous you are spraying - really skimpy on the data here, not much for us to work with). On a speed-density setup, that tells the ECM that the incoming are is cold, it calculates an increased density for the air, and hence calculates a much larger mass value for the air. That causes it to add a corresponding amount of extra fuel, to go with the "apparent" denser air. So.... what kind of system you are running, and how you planned to add the extra fuel when you spray will come into play, but in general, unless you are factoring in the extra fuel from the "colder" intake charge, you do not want to spray before the IAT sensor.

 

Its a 93, with a wet kit.