Aw gawd not again !
LOL
That noise, my friend is the sound of stalling air, as it parts company from the leading edge of the compressor blades in the turbo....
Mine does it MINT !

( MD321H), a silicon intake has magnified the noise too !
The WYIOC are having a photo/video shoot this coming week, but I'll try and Youtube a sample if possible.
HTH
dunx