So I had a MBRP cat back installed on my 2016 Fiesta St a month or so ago. Has been rattling like a bitch and driving my crazy. Looked at all the hangers and at the other common places people have issues with and could not figure it out. I work at a car dealership right next to a Ford store so I figured I would roll the dice and take it in for them to look at it. Now this is the dealer who will be installing my mountune intercooler and mountune downpipe so I figured they are a bit mod friendly. I have my BOV installed and a Injen intake on my car. Uninstaled the Cobb Ap and droped it off 10:00 AM this morning and get a call at 1:30. Service advisor told me the rattle was being caused by the aftermarket exhaust. Told me they would tweak some things and maybe cut a factory hanger and asked if I wanted to move forward. I said go for it. Picked it up at 3:35 and it was free of charge covered under warranty. I know its not a big ticket job but its just nice to have a Ford dealer right next to me that is mod friendly. Oh and they aren't a Ford Racing dealer btw