Why Fit An EGT Sensor?

What's the advantage of fitting an exhaust gas temperature sensor and how can we leverage that data for our tuning?

In this quick rundown, we look at a few reasons why we might want to fit an EGT sensor, why we can't just use our Lambda aka O2 sensor for the data instead, plus the advantages of using a CAN-based module like EMTrons ETC4 vs traditional thermocouple amplifiers.
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TIME STAMPS:
0:00 - Why Fit EGT Sensors?
1:20 - Performance Applications Benefit
1:35 - Wny Not Use A Lambda Sensor?
2:21 - Thermocouple Amplifiers Vs CAN Bus
3:26 - BUILD.TUNE.DRIVE