Just got my turbo replaced along with my Intercooler. I have a zzp k04 turbo and a zzp Intercooler. The turbo (or whatever it may be) is making this noise when building boost. Any ideas of what it could be?

 

Boost leak

 

My '10 Balt is making the same sound except I'm pretty sure my turbo is stock. When I bought the car it sounded exactly like an exhaust leak but has amplified to sound just like this. Have you figured out what is wrong?

 

oh now that I'm not on my phone, that does sound like an exhaust leak, the same one I had, check right where the turbo connects to manifold and if not there the manifold gasket. That's the sound it makes when its making a gasket vibrate as air passes over it and out the leak. may have a loose nut.