Granted that Exhaust Gas Temperature (EGT) and Cylinder Head Temperature (CHT) have applications in auto industry, the sensor probes and instruments designed to capture and display these temperatures were primarily designed for use in aircraft.

The Exhaust Gas Temperature (EGT) sensor or probe is placed in each exhaust pipe of the aircraft, roughly 4 to 6 inches from the cylinder head. These probes read the temperature of the gas as it leaves the cylinder. The exhaust gas temperature is not uniform and varies depending on the power setting, ambient air temperature, altitude and cylinder compression.

Other factors that come into play and have a bearing on the exhaust gas temperature include spark plug ignition ... Read more »