MAT sensor data

[Dale Ulan]

> temperature (MAT) sensor which is mounted in the (heated) intake manifold.  It 
> the intake.  Granted the ambient temperature could be INFERRED from 
> readings from this sensor,  engine speed, and MAP but that sounds rather 'round 
> about.  Is this sensor yielding other intelligence??

Yes. Intake air temperature at the *port* of the engine, which is exactly where
the port mass flow is determined via the speed-density airflow estimation
system.
I don't think the differnece is that much. Probably an economic decision: maybe
that sensor was cheaper than the alternative.. etc.

-Dale