Update
At idle, it has a rattling/loose type bearing noise that comes and goes, hard to explain in text-have to hear it.
As it comes off idle, normal supercharger whine. It may be excessive backlash in the gears of the blower.
With the additional pressure of now pushing Air in the motor, blows by the piston rings, builds pressure in the bottom side of the motor and needs to push that pressure out somewhere, breather, oil dipstick..etc.
I did not drive it, was very late last night, moved the Fuel pressure gage/regulator, and need to reset.
Would like to make some type of Air Box around the Air Cleaner too( I could only mount it on the inside of fender.
That is what my mechanic just sent me. I hope the noise he hears is this chargers loud noise and not the unit about to blow up!