I just looked at that BAT kit, It is very quites simple, okay you only have three nipples correct? and your IAT is located in the factory air box, say you put on an open element filter... which you did, the you would have no where to put the IAT (because the airbox is gone) so you made a place in your filter. All the BAT kit does is they give you a T fitting so you can put two of the hoses together in one hole thus freeing up on open port now, then you can use that open port to put you IAT sensor in. This is really quite simple and you can pick up a T fitting at the local hardware store for like 5 cents. Do you understand it?
-Jeff-