A question. Every since I had my car tuned (see modifications in my signature) it's been making this noise. Is this wastegate flutter or is something else going on (boost leak)? The sound on the video is not great, but the best I can do with an iphone. It's a very loud (easily 2-3x louder than the video ... you can't talk to your passenger while it is happening loud). What you don't see in the video is that I'm only on my accelerator about 50% in 5th gear (just enough to enter boost starts around 10 psi). The noise is a loud whistling noise that I can only compare to a tea kettle. The noise will continue until I get out of boost. If I downshift and go wot I can't hear the noise, but then again my Borla exhaust is pretty loud so i'm not sure if it's making it or not.
I don't want to word vomit here, so any additional questions/details let me know.
http://<a href="http://youtu.be/S7sv... - YouTube</a>