Originally Posted by demonshin
So my friend got back to me and the problem now is the exhaust gear is not working correctly. They changed out everything and everything looks ok and they run tests and pass and then run test the 2nd time and it fails. He had 3 other techs working on my car and they cannot figure what the problem is right now
. So now it keeps failing the tests, he is going to request bmw engineer assistance and have to wait till monday. Will update you guys once I learn more.
I guess our situation could be different than yours since you're actually having trouble rather than a split second noise that doesn't appear to outwardly effect anything.
I've run every single test in the factory diagnostic computer on my car, and it passes every one. I'm going to start investigating this further.