here is a quote right from the how too no, it says nothing about what you can do with it :roll:
Now you should decide what you want to do with the IAT sensor that you removed from the airbox. Be sure to plug it back in to the electrical connector or you will throw a code. You have a couple options as to what you can do with the IAT
Wait and drill a hole in the new intake pipe and mount it in that hole using a grommet to make a tight seal. This is the best option, but it requires the drilling of another hole
Mount it in a location near where the end of the cone filter will be, such as taped to the upper radiator hose. This way it will still sense the same temp air as the intake is sucking in. This is what I did with mine
Extend the wires and mount it outside of the engine bay. Some people say this will increase performance since it will sense colder air, but I would not recommend doing it for several reasons.
It will cause the cause the car to run rich, causing excessive carbon buildup in the intake system and exhaust
The sensor could be damaged by the elements, since it will be more exposed.
It can negatively effect your gas mileage
It won't really give you a performance gain.