I installed a Thrasher cold air induction kit on my '98 GP GT and love the load sound it makes. I recently saw online an extension cord kit to relocate the sensor to a spot closer to the source of air, as opposed to the rubber housing unit between the filter box and the throttle body. I went ahead and relocated the sensor the other day and haven't had any problems yet. I had my car in the shop today for another problem and they criticized the relocation of the sensor, saying that it needs to be in a more enclosed location, prefferably where Pontiac put it, and that another location could cause the PCM to not keep up with the sensor's readings. Any tips on this? I relocated the sensor to near the tip of the Thrasher box, closer to the front driver's side corner.

I installed a Thrasher cold air induction kit on my '98 GP GT and love the load sound it makes. I recently saw online an extension cord kit to relocate the sensor to a spot closer to the source of air, as opposed to the rubber housing unit between the filter box and the throttle body. I went ahead and relocated the sensor the other day and haven't had any problems yet. I had my car in the shop today for another problem and they criticized the relocation of the sensor, saying that it needs to be in a more enclosed location, prefferably where Pontiac put it, and that another location could cause the PCM to not keep up with the sensor's readings. Any tips on this? I relocated the sensor to near the tip of the Thrasher box, closer to the front driver's side corner.


Putting the IAT sensor closer to the air intake source is better and away from the engine because of the heat generated. It is a thermistor, thermal resistor which changes resistance when the temperature goes up or down. The important thing to consider is make sure the elements make sufficient contact with the air that is being drawn in for a close to accurate reading.

BTW - The PCM will give off an error code if it detects that the IAT sensor range is incorrect after a few drive cycles, so you are probably OK.

The theory is by lowering air temperature the PCM allows more ignition timing for increased horsepower.






http://i5.photobucket.com/albums/y186/lizzywiz/gtp.jpg
Thrasher CAI, DHP v1.0 PCM, SLP Headers,
3.25 SC pulley, CAIT GMAF, 2.5 DP/Hi-Flow CAT,
u-bend delete, 160 TS, ZZP Stage 1 72mm TB,
TB spacer, MSD 8.5mm wires, Autolite 103,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials
1/4 ET: 13.210 sec. @ 104.490 mph
0 - 60 ft: 1.945 sec.

I agree with Bob, mounting it farther from engine heat will give you more gain as it will sense cooler air. Since cooler air is more dense, it helps make more power.

also- make sure it is not in a place that the rain or any water can fall on the sensor- made that mistake on my 98 s10