[orangeglim]

Just wanted to follow up on this. Took the car into the dealer yesterday after discussing the issue with them. Turns out the fix for the the rattling flap in the exhaust is to cut off the entire muffler section and replace it. So, they did that and just installed my MPE instead of the replacement stock exhaust. The warranty covered the labor to install the MPE. They also left me with the replacement stock exhaust as well, and a new clamp. So, all in all, worked out well, only had to pay for the installation of the diffuser.