There is a yaw damper Bearcat but it won't keep you co-ordinated in a turn. Throttle's description of the handling of the Dash is excellent. I was very surprised how little force is required on the pedals to elicit a response and found myself over controlling the rudder in my initial sim sessions.
I use just a squeeze of rudder during a turn to keep her in balance with the autopilot engaged. Each power change will require a rudder input and a slight retrim, going from 50% or so to flight idle will require some good footwork, as will going the other way if you want to keep her in balance and fly her nicely. It's the use of rudder with power changes that I think is the most prevalent rather than in turns but soon it becomes second nature. So in conclusion, fly it like a massive, ridiculously overpowered MEP with a very sensitive rudder.