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MSFS What SDK engine parameters affect manifold pressure?

Hans Humblet

Hans Humblet

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18
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belgium
I'm trying to model an engine and although I'm getting close to the real thing, the manifold pressure reading is too low. I'm reading values from about 4.0 inHg up to about 18 inHg. The engine I'm modeling should read something in between 25 (1400 RPM) and 42 (6400 PRM).

What are parameters (that can be set in the MSFS SDK) that affect these values?
 
In FSX it was (and in the MSFS it is in the engines.cfg)

turbocharged = 0 ; Is it turbocharged? 0=FALSE, 1=TRUE
max_design_mp = 29.92 ; Max design manifold pressure, (inHg)
min_design_mp = 2.992 ; Min design manifold pressure, (inHg)


You need to have supercharged or turbocharged set to 1 to get manifold pressure above 29"

In a normal engine the manifold pressure will never exceed the outside air pressure (because that's how they work). Only with a supercharger or turbocharger can you get higher manifold pressures (because that's how they work).
 
Tx for the quick reply, @Anthony31!
The engine is indeed turbocharged and I already indicated it as such in the sim.
So does you mean I have to set the max and min design MP to 29.92?
 
Hmmm... That's really strange: I have to set the MAP ranges up to like 5000 to get readings that come somewhere near the real-world values... (while the units stated in the configurator are inHg) And if I do so, the engine's RPM goes waaaay up, like a 1000rpm too high.
Must be some other params that don't match yet... 🤔 I guess I'll have to do some more reseach.
 
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