No, have not yet figured out the issue, have taken the car to 2 different bmw Indy shops neither helped, both said at the end take it to bmw to diagnose the issue.
We found a little leak on the pipe which goes from the turbo to the intercooler which seemed to have some oily spots around the bend just before the intercooler, I told him to change it, but he refused, assuming that this isn't the major problem. My third party warranty only pays for $70 of the diagnose, so I'm afraid to take it to bmw and it takes them few hours to figure out the issue and be stock with a $500+ bill just for diagnoses.
So I have left it as is for now. I will soon be ordering some new spark plugs as I have not changed them since I bought the car 20,000 km before.
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