Do you have lowering springs?
I had a popping/clunking noise from behind the passenger seat. It sounded like it was from inside the trunk but it was actually coming from my lowering springs making contact during compression going over bumps. Got some sleeves and it helped.
Found the solution on...
Just had mine installed and had the same issues with the tip alignment and the valve spring/clip.
Muffler shop had to trim the pipe on the valve side that goes into the muffler to get the tips to align properly. They also had fabricate a new piece to connect to valve motor to the valve.
It...