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Originally Posted by byoo79
I have a E90 with zsp and 6sp manual.
When I am about to shut off the car, I pull the emergency brake and press the start/stop button. The car shuts off and the last second of shutting off it makes a "flap flap flap" sound.... somewhat like a pigeon flapping or the sound of a diesel engine running.
Is this normal? Car runs great and I have no problems with it.
This is paranoia at its best.
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Mine does that sometimes too. It does it less frequently now that I'm past break-in. There's a paraghraph in my owners manual, forgot the page (and it's not on the online manual that you can download) about something like this being normal at times on start-up too.
Also, BMW just updated the cams slightly so this may have had something do do with it. I wouldn't worry about it.