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Old 22nd July 2005
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BlackWagon BlackWagon is offline
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Default Can I connect an EGT gauge to the factory probe?

Just curious if that's even possible. I'm assuming the EGT probe eventually gets translated into an electric signal. I don't know if there are even any electronic EGT gauges out there.
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Old 22nd July 2005
jdmpartstx jdmpartstx is offline
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There's an open source application out there that will allow you to monitor signals from all of the sensors on your motor via the OBD2 port.

This includes the factory EGT probe.

There are 2 reasons why you would not want to use the factory EGT probe with a gauge.

#1 - it's too far away from the exhaust ports to make any difference. It's actually AFTER the first catalyst. The reading here will be several hundred degrees lower than what you really want to measure.

#2 - it's not a precision sensor. It's not there to tell the ECU the exact EGT values. It's just there to monitor the temperature/function of the catalyst to make sure it doesn't overheat and break. It's there to protect the cat, not read accurate EGTs.
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