I recently purchased the Seneca V, and I’ve been testing it out this week. I referred to the POH linked above in this thread and took the plane on a couple of flights. Overall, I’m enjoying this. The main drawback I’ve found is that the mixture behavior suffers from the same problem as other turbocharged aircraft in the sim: if the mixture is left at full-rich during the climb (which is recommended by the POH), the engine loses power with altitude, and fuel flow drops significantly with altitude. This appears to be a bug in the core logic for mixture in turbocharged engines. I’ve created a bug report describing the problem in more detail here: