Messed around with SimConnect in .NET and ended up making a prototype for a Skydemon connector. I originally wanted to do something else, but I was also having a hard time connecting MSFS to Skydemon.
I actually wanted to make something to log altitude, RPM and torque in a csv file. But I guess I have the ground-work done for that too now.
Edit: Forgot to say thanks to @jockerfox72 and this topic: A minimalistic SimConnect example: work but I received nothing with string request