IL-2 COD Sound issues

[ramstein]

Hi,

IL-2 COD Sound issues:

1)Sound is good from 20% to 100%
2)Sound cuts off is low and engine of aircraft is around idle speed sitting, or idle in the air.
3)Move the throttle a little beyond idle and it increases the sound with engine rpm.

No other sound problems in IL-2 1946
Black Shark, A-10C , Stalker..

MSI P7N Nvidia motherboard with core2duo 3 ghz cpu, W in7, 4gb ddr22 ram 500 gb hard drive space.. Sata hard drive and ide hard drives, Roadrunner Turbo with high speed (runs nivce high speeds).
Saitek X52 Pro with pedals
46" LCD TV (HDMI connection)

Coolermaster gaming mouse.

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Is there some audio setting I can adjust in some INI file?

IL-2 COD was purchased on dvd an use on Steam.

runs nice, at medium setting in multiplayer..

Sound issue main problem..

I usually use USB headset with microphone....
I usually plug directly into the usb ports on motherboard, but can also use a self powered usb HP 7-port hub.

I have asked before, and never found a fix..

I want to hear the sound from engine start>idle> add rpm> etc..
I have no problems with the environmental sounds, like the wheels running over the dirt ruts on the runway and takeoff on the fields and grass and dirt.. nor the other sound like flaps, wheels, guns, wind, etc..

thanx..


*I hope this is the correct forum for my problems and question,..