I have been having similar issues out of my 09 535 XI. I’ve changed everything BUT the injectors to this point, with little improvement being noted to this point. My last steps are to change the after cat O2’s, if that doesn’t T fix it, then it’s injector time, as much as I can’t afford then at this time. My first Bimmer too and even though it runs like hot sh!¥ sometimes, has rarely been out of limp mode, I love that damn car.
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