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      11-12-2020, 07:33 PM   #29
Spacecpe
First Lieutenant
Canada
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Drives: E90 335i Msport
Join Date: Sep 2014
Location: Winnipeg, Mb Canada

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Mmmmm very strange.. I thought it would be O2 related for sure. Ive seen batteries cause some very weird issues before, its a possibility.
Would be very nice if the incident could be logged so we can have something to work with.
You said you have new MAFs right? Take a look at the map sensors and give them a clean.. I had a very weird cold start issue before on my N54 where the car would start fine then the AFRs go full lean. Turned out to be the TMAP sensor that was on the intake manifold.. almost sounds familiar to your issue..
Appreciate 0