Ground run, parking brake set, power stabilised:

Separator ON: torque drops from 1700 to 1500 ft-lb, ITT rises from ~600 to ~700°C. Both as I’d expect.

Separator OFF again: torque recovers to 1700, but ITT stays at ~700°C and does not come back down.

What I checked to rule things out:

Cycling the separator several times doesn’t stack the error, ITT just sits at ~700.

Bringing the power lever back to idle and then setting the same power again with the separator off puts ITT back at ~600, so the value isn’t permanently offset, it seems to be recalculated on a power change.

What makes me think this isn’t just gauge lag is that torque recovers fine. If the intake path is clear again, I’d expect ITT to follow it back down.

Is that expected behaviour, or does the ITT contribution not get removed when the separator is deselected? Thanks!