Air governor vacuum sound?

Did the bad gov you took off have that hole plugged? If so remove plug from old one and install in same hole of replacement gov.
Most govs come universal with multiple holes and you either plug or unplug the ones needed for your application.

 

You can only adjust the cutout. The cut in is pre set in the governor. That one you have is tight. That happens. Most have a 20-25 psi window between on and off. I set mine to about 125-130 and the preset cut in is usually around 100-105.
I’ve noticed some can be tight when new and after they cycle and get hot in time they loosen up and the cut in drops to a lower psi but cut out stays set. If that makes since.

 

If everything is connected to the gov correctly then only two things come to mind that will cause this.
One is the compressor unloader is sticking or
Two is the purge signal line has back pressure on it caused by dryer.

 

Sounds like a plug should have been placed in the hole. Did you put it together exactly like the old one?