SolarEagle, I'm interested in this issue as well. I believe the FW 190 has a constant speed prop, which is governed by the Kommondagerat, Here's some info from pilotfriend.com:
"A constant speed propeller allows the engine to develop maximum rated power and rpm during the ground roll and to develop full power throughout its normal rpm range. With a constant speed propeller the pilot controls inlet manifold air pressure [MAP] with the throttle lever and the engine rpm with the rpm control lever or knob/switches. The pilot has several combinations of rpm/MAP to achieve a particular power setting. For example, in one particular aircraft, the recommended combinations for 65% power at sea level are 2100 rpm + 26 inches Hg MAP or 2200 + 25 inches or 2300 + 24 inches or 2400 + 23 inches. So you can use low rpm and high MAP or high rpm and low MAP to achieve exactly the same power output. The low rpm / high MAP combination probably gives more efficient cylinder charging and better combustion plus less friction. The high MAP also acts as a cushion in the cylinders, reducing engine stress. MAP is usually measured in inches of mercury [Hg] rather than hectopascals. Standard sea level barometric pressure is 29.92 inches Hg or 1013.2 hPa."
What's puzzling to me is the proper usage of FSX's prop pitch controls in light of this set-up in the 190. Where in the cockpit are the controls, if there are any, to manually adjust prop pitch before leaving it to the Kommondagerat? Otherwise for take-off and beyond, my rpm is always at about 2500.