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Old Oct 27, 2008, 12:31 PM   #2
PVD04
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I would put the sensor in the UICP before the meth nozzle.

One reason is that the alcohol hitting the sensor will result in measuring the temperature of the alcohol and not the temperature of the air.

A second reason is that the alcohol on the AIT sensor could delay a reading of increased air temperature.

A third reason is that the temperature of the charge pre-nozzle will provide an accurate indication of the amount of air entering the intake manifold. If the temperature in the UICP goes up, the amount of air goes down and vise-versa.

Additionally, another location sometimes suggested is the intake manifold. This location can result in the sensor reading incorrectly due to the heat of the intake manifold. During high-boost and high-RPM operation the flow rate through the intake manifold is high enough that the intake manifold will not significantly heat the charge. If the intake manifold does have a significant amount of heat stored in it it could artificially raise the temperature reading beyond the actual charge temperature.

-Paul
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