Yeah, it was very easy with the 15mm socket and breaker bar.
So.... I started off before that by disconnecting the small hose that goes from the supercharger to the valve (what they called the wastegate). Problem persisted.
Then I removed the belt for the supercharger and guess what??? I could still hear the sound, just not as loud as with the supercharger connected. I had to have the window down to really hear it, and it was only when really getting on the gas, which matched what I was getting before as I needed to stomp on it, somewhat, to get the supercharger to kick in.
So the supercharger doesn't seem the be the problem child that I thought it was, but it make the problem a lot louder.
The shop manager told me that he thought that it was an exhaust leak issue, and admittedly, my downpipe is probably due for replacement. I had to get it welded about a year ago (I knew it was a short term fix) right where the flex section is. They told me that some spots were like trying to weld rust together. The shop looked for obvious leaks around the engine, and didn't find any exhaust or vacuum leaks.
They also put it up on the lift, and without any resistance from the tires on a road, the supercharger wouldn't kick in then either to really isolate it. Not sure what else to look for or how to try to isolate it more.
