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Plane Running Slow?

Throttle set at 100% on joystick may respawn with 90%, check the HUD display, if still reading 100%, see below:

Manual mix or carburetor heat could be slowing you down:

To mix or not to mix and the penalty for hitting the carb heat, "H" in CFS1 layout.
 
Took all the planes to 1000ft and recorded:
 
1. Maximum indicated airspeed at level flight with  auto-mix engaged, full throttle.
2. Maximum indicated airspeed with manual mix on with mixture on full rich.
3. Maximum indicated airspeed with auto-mix engaged and carburetor heat on.
 
Results are:
Plane Auto mix, full throttle Manual mix, full rich Auto mix, carb heat
George 301 knots 298 knots 267 knots
A6M5 254 knots 250 knots 241 knots
A6M2 246 knots 242 knots 233 knots
Wildcat 235 knots 232 knots 221 knots
Hellcat 283 knots 280 knots 272 knots
Corsair 297 knots 293 knots 243 knots
P-38 277 knots 273 knots 265 knots

 

 
 
Notice how the Corsair drops 54kts when carb heat applied, can appear like the engine is blown. Be careful when typing.
 
The only benefit from manual mixing appears to be  lower fuel consumption.  Manual mixture on with full rich at low altitude slows the plane  3-4 knots.
 
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