My 200C which I also race has the IO-520A with Gami’s and setup to cruise at 2350 RPM and what ever MP I can get which is obviously dependent on Altitude and other. Also run ROP. On average though, I cruise at 9 – 10,000 ft and avg. 21″MP @ 2350 @ 14 GPH which typically gives me around 186KTS True Airspeed. CHT’s are generally around 350 and EGT around 1390. For planning purposes I use 170KTS True and 15GPH.
In terms of racing, we firewall it most of the time with a few tweaks (secret kungfu) here and there and burn on average 24 GPH.