[quote]Originally posted by Vortex
[b]The IAT stands for Idle Air Temperature.
IAT stands for Intake Air Temp . It senses the temp of the incoming air.
The PCM uses the IAT value, to adjust fuel , ADD FUEL if it is cold
take fuel away when it is hot. The resistor fools the PCM into thinking thats the air is colder than it really is. So there is more fuel.
91 LX Conv. 5.0 FRPP- shorty headers,Rebuilt AOD with wide ratio kit,3.55s, Flowtech H-pipe, Dynomax Cat-Back, Explorer Intake, Explorer Injectors, 3/8 in phenolic spacer, C&L 73mm Maf, Moroso cold air, Trickflow Valvespring,cloyes true roller, Steeda 1.72 RRs, Strut tower brace, air pump eliminator pully, Blackmagic electric fan,