an update....so since that morning..the car has been normal...no issues at all, everything seems fine...i took it in to my local indie bmw shop....he hooked it up....and scanned....nothing? i said are you sure....he said, yeah, if there was a fault his machine would have picked it up....now don't ask me what machine he was using...i didn't ask...some laptop with a long cord and yellow box that sat on my dash for a bit....so i'm blaffled....he said if its driving fine then for now it should be ok...he suspected the diaphram or oil separator...i said we'll prob just go ahead and replace the oil separator, and clean the ccv?