I see guys do this all the time! Matching ITT is not smart.

Look at this scenario: (R=Right, L=Left engine)

………… L ……….. R
ITT…. 640 …… 640
TQ…… 70 ….... 75

What’s wrong with this:
a. It increases yaw, one side is pulling harder than the other.
b. It increases drag, as you have to trim that yaw out in order to stay coordinated.
c. It decreases your a/c's total performance
d. It Increases your fuel consumption.
e. You’re more than likely operating the R engine much hotter than the L seeing that 1 bad thermocoupler can usually decrease your temperature reading by 15 degrees. Remember these things can't last forever; after all they are located in the heart of the engine and are exposed to its hottest temperatures.

So which side is right? I’m betting on the L side being correct. So I’d limit my L side to the recommended temperature and match the R side torque.

In the EMB we’re temperature limited to 800 T6 (ITT) and we get a Master Caution T6 (ITT) warning at 816. We climb limit ourselves to 720 unless we need the extra power (Wx, Terrain, etc). Let’s say that your CA wants to get home quick and is running the example below:

…………. L ……….. R
ITT…. 790 …… 790
TQ…… 82 ….... 86

There is a really good possibility he’s frying his R engine and doesn’t even know. He probably has 1 or 2 bad thermocouplers and his R engine is showing 15-30 degrees cooler than it actually is (790+30=820).

On the E120 each bad thermocoupler accounts for about 15 degrees of temperature change, the question is what do yours account for?

Bottom line, match the torques to the most restrictive ITT and you'll always be safe.