Quote:
Originally Posted by Billy Mild
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I have mine in the same location as We Gone. However, the purpose of this mod is to avoid the MAT being heat soaked and providing a false signal to the ECM.
Locating the MAT further upstream of the intake air charge provides a more consistent Intake Air Temperature signal BUT you cannot take advantage of it unless the calibration is modified to reflect that change. The stock calibration is expecting a nominal temperature of ~ 80C. At that those temps, the ECM uses intake air and coolant temps in equal parts to modify fueling. Relocation of the sensor effectively eliminates sensor readings of anything above 40C or 130F. At this temp, the ECM is using the Intake Temp over the coolant temp to regulate or modify the fueling.
The result is that the motor will run richer than it should be. The purpose of the MAT/IAT is to help ECM regulate fueling so that it is consistent over a wide spectrum of intake air/coolant conditions. IMO, not worth doing unless the calibration is modified to accommodate the relocation.