dont know how helpful the scaling will be when everyone's scaling is different and most people heard only their own exhaust in person and stock.
its best to check youtube videos and pick the one you like most
That's the case with older BMW N54 and N55 models; with the B58, it's a better design, and it was thought that the problem was fixed. We are now realizing that it still needs to be upgraded
I say this with no disrespect whatsoever, but if you need help from the forums to tune the car, you probably should not be testing with your own car, its a very expensive “test kit.”
If I was in your situation, I would buy a custom map and learn from the datalogs to understand what changes were...