13TITAWD

I'm noticing when my 2.0L is not fully up to operating temp, but not necessarily COLD, there is a loud exhaust note between 2,000-2,400 rpm. It's a new sound, car has 21k on it, bought it with 6k. Almost sounds like the exhaust has a hole in it. Does or has anyone else experienced this? It's quite annoying as I am a NYS Thruway commuter to and from work. I used to work for a Ford dealer but no longer have access to my OASIS account and can't look up TSBs. Also, I'm noticing all of the interior door belt moldings buzz when listening to music. THAT is annoying. I've had it to my local dealer for service and they installed a 'foam kit' to insulate the doors. That helped for a few weeks but now all of the doors are back to making their buzzing. Anyone deal with this too?