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      04-23-2013, 12:43 AM   #151
Jive
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Drives: 2013 E92 M3
Join Date: Dec 2010
Location: Bay Area

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Quote:
Originally Posted by elm3 View Post
The noise coming from the left rear quarter panel that sounds like an air pump is actually a vacuum pump. Some of the stuff in our car uses vacuum to operate them. If you look under the car on your left, you can see either one or two little cylinder looking thing, that is your vacuum cans.
I heard this today for the first time! It got louder the closer i got to the rear wheel and it sounded like some sort of mechanical pump but i had no idea what it was and why it was on when the car was off.

Quote:
Originally Posted by duk
the farting, popping, burping when shifting when car is cold <3
Lol! I just LOVE how this car sings to me on a cold start, it just makes my morning so much better.
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