According to user’s report, it is recently discovered that temperatures in engine parameters(CHT, EGT, oil) output by X-Plane are not confined to a certain unit(Fahrenheit or Celsius). It seems that those temperatures are just numbers to X-Plane and X-Plane doesn’t really care about the values. The actual units are only related to the aircraft models. To make the temperature values using the right units, the latest G1000BridgeX v2.2 reads .acf files(the file of the aircraft modeling) and get the units from the file. Ok, here is where it’s getting complicated: It seems the unit settings are not always indicating the right units in the .acf file(this also confirms X-Plane doesn’t really care about the units for those temperatures). So, if you are already using G1000BridgeX v2.2 and seeing temperatures not making sense to you, you need to modify those unit settings in the .acf files manually. Do as the following: Find the .acf file, it should be some where under “Aircraft” folder in your X-Plane folder with the file name similar to your aircraft’s name. Open the file in a text editor, find lines look like “P acf/_oilT_is_C 1”, “P acf/_CHT_is_C 1”, “P acf/_EGT_is_C 1” for unit settings for oil, CHT, EGT temperatures. Change the last number to 1 or 0 to indicate the value is in Celsius or Fahrenheit respectively. Good luck.
That did the trick! Most obliged!