Thread: What Is This???
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Old 11-22-2011, 06:45 AM   #13
ppbon
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Join Date: Nov 2005
Location: Florida
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This particular sensor...

Quote:
Originally Posted by blue2000s View Post
Two different sensors.

There's the one in the grill, which reads outside air temp and it's displayed in the gauges if you have it active (search OBC hack) and probably used by the automatic climate control system.

There is another sensor built into the MAF that tells the DME what the incoming air temperature is. This is used to control fuel metering and spark timing.
... does two things:
a) It displays the outside temperature for cars that have the OBC activated and,
b) It lets the HVAC system know the outside temperature so it can compensate accordingly.

Happy Boxstering,
Pedro
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