I believe you will throw a code if you leave the IAT out. It codes for high or low, either shorted or dead. Some have resistors in the wiring and swear by it. I looked at one that had a resistor with my starscan and it was running at like 75 degrees. I think buying the extension and putting a resistor in it is the best approach. This way you can take the extension out when you wish and have normal operation, and put the extension in with the resistor for running at say the track.
Silver 06 SRT-8
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PPP 426ci.com Stroker, Track Warrior cam, half shafts, Mopar 392 Heads, Quaife LSD, Kooks LT headers, Dual Tbody intake, Corsa cat back, AFCO coilovers.
11.641 @ 116.805 (Best timeslip)