i know it´s a long time ago, but could you explain a little bit more.
in the last video what your have been posted is not the AGR System. This is the mainfold which is conneted to the engine.
Could you solved the issue?
I have nearly the same issue
https://f30.bimmerpost.com/forums/sh...6#post30946036
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3ér GT F34 (190PS), Motor: B47, Automatik, Bj. 07/2015, km: 207.000