For everyone that keeps asking. The flutter is called compressor surge. I am still running a fully adjustable forge BOV that isnt blanked. I use a bunch of custom parts and my turbo is a custom built billet VF48.
if your going to leave some negative comment or opinionated comments then go find someone else's videos to comment on.
I build my car for me, the way I want it.
My Instagram is @P40kyn