Ok Im hopeing that this isnt what I think it is but here is what happened.
First off the car is an 04' WRX Stage II Cobb AP (OTS map) Catless DownPipe, Cobb Short ram intake, MagnaFlow CBE, everything else stock. With this cold weather I am experiencing boost oscilation (bosst surging) and I am hitting boost levels of 19.4psi.
Driving home yesterday under normal driving conditions the vehicle started to stutter , rough idle, no real acceleration ability and when stopping almost stalled. Let the car sit for about 15 minutes until wife got home to take the kid, went out and drove the car around the block and everything seemed fine. Now this morning everything seems fine, I am still experiencing the boost surges, but now I can hear a small little metal chimeing noise almost like loose bb's in a metal tin coming from the glove compartment area (which I believe would be the same area as my turbo housing) I am thinking my stock catted up pipe has started to break apart causing damage to my turbo. Can anyone help in diagnosing , I know its hard to do over the forums but any ideas or advice would be appreciated.
Also , if I go have a catless uppipe installed it would probably be noticable if the stocker was breaking loose inside and causing damage to the turbo. Just curious. Thanks for any help.