UPDATE
I managed by switching the entire WIND section by the config of the other 737ngx. Worked beautiful, I had to copy the 6 wav files into the sound folder, no need to alter engine volumes.

Now its real, the wind sound predominates at speeds above 250 and at near 300 its all you hear. It real because the wind sound actually tells you whats going on, sometimes Im panning on the gauges busy programming or checking, and I listen how the wind sound changes so I know speed has gone up or down and must keep an eye...just like in the real plane. If you don't have the other you will need to configure manually, which I don't recommend.

I remember in the cockpit of real 707s that although I didn't follow what was going on or was just watching out of the window from the jumper seat, I could tell each maneuver or atitude change, acceleration or reduction, by wind sound.