I have never flown the 2, but have much experience in the 23.
The 23 has a -12 engine, the 3 a -11.
They are both similar.
The TPE331 engine is a very good engine and quite robust. I much prefer them to the PT6.
You would be hard pressed to over torque the engine, requiring about -6 degrees to develop over 110% torque.
They are very sensitive to temperature however especially during start. You must have sufficient power to start them else you will certainly over temp the engine. This is especially so if the engine is "hung" and you try to add more fuel to build rpm.
Generally a symptom of this behaviour is bits of rather expensive metal alighting themselves via the tailpipe. This is never complimentary to your resume, or of your piloting prowess.
Luckily once you have an agreeable SRL computer online and the rpm exceeds 90% you have temp limiting to save your backside. This will limit the temp below 650 degrees and save your job. Of course if you give it a fistful of power at low level, you may over fuel the capacity of the temp limiter to bypass and have an expensive day. Still, on an engine like a Garrett, torque is rarely a consideration. It's always temp and the required torque at a particular temp given the ambient conditions.