I would rather see a false reading than read pre meth while tuning. I think it makes life easier... both readings are false anyway, so pick your poison. Pre meth will read too high and post will read too low. I like the benefits of reading a sensor that's getting meth.

 

Main reasons I care what the sensor sees are that I am running SD so IAT is used in airflow calculation, as well as for timing. Sensor is below the IC core, spray would be above it, so sensor would read actual air temp.

 

Since pre ic post blower you will want a large
disbursement area.