I got my clutch replaced recently & when I got the car back my turbo spooling sounds like a supercharger. Mods: CAI, Hybrid BOV, & Perrin Turbo-back I was going to make my own video but I came across one already made. (Thanks youtube!) http://www.youtube.com/watch?v=yirtb1Damp4 Any ideas?
Check and see if the restricter pill is in the line? I forget where exactly it is but a few years ago I had that problem and I Just needed a 5 dollar part (or free depending where you go). It's a little pill with a hole that helps regulate airflow.
another question, to help determine if it's a clutch issue. When the turbo spools up, do your rev's go up with it as well? If so does the car not accelerate like it would normally? If the rev's are not going up with it as well, then I believe that would make this an airflow issue. Correct me if I'm wrong anybody.