Wow! My macan was built in mid 2015 and I can’t say if the exhaust bracket was replaced/repaired or not. I do know that when I looked down there with the tech and he would give it a couple revs? It was very obvious that the down pipes were rattling. One tech pulled down on the down pipes while the other revés the engine and we noticed that the flex pipe had a lot of play within them but the vibration of the pipes were completely gone until the tech stopped pulling down on both pipes.Alright. I guess my next question would be whether the car was an early 2016 build (summer of 2015)?
From your description, it sounds a lot like the issue I had with the cracked exhaust bracket.....except your dealership seems to have ruled that out.....which makes me wonder if that should be revisited?
There were a lot of cases of broken exhaust brackets where instead of doing the full repair, the dealership simply cut off the bracket so it wouldn't be noisy. Also, some of the early repairs only involved replacing the mid-pipes; whereas later, Porsche determined that the downpipes required replacements as well (if I recall correctly). So I'm wondering whether its possible your car once had a partial repair done, but not a complete repair.
Our Turbo was a May 2015 build, which means it was one of the last group of Turbos built for the 2015 model year. Our exhaust issue didn't show up until sometime around 50k miles. It was replaced at 60k miles. Same symptoms as you reported. The repair invoice says the following:
Consulted TI bulletin 20/16 2601. Found front exhaust pipes to be outdated version causing rattle. Removed exhaust system. Convert exhaust system. Replaced front pipes with updated version. Removed exhaust tabs from rear section of exhaust. Test drove vehicle to confirm repair. OK.
There's more background at the thread link below, which I'm guessing you've already found. There was at least one member who reported that his rattle was due to a broken internal baffle on one of the mufflers, so maybe that's a another thing to check.
Wish I had something more definitive for you. Best of luck getting it sorted, and let us know if it's finally resolved.
The tech mentioned that it seemed to be a vibration coming from the engine and that he’s afraid that if he changes the down pipes? That the problem would still be there.
from what I understand, you’re telling me that my down pipes could be an outdated version and could be the cause of the problem. I will call them today and ask to revisit the exhaust again.