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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 and B58 Turbo Engine / Drivetrain / Exhaust Modifications > 2013 335i xdrive sedan sportline exhaust issue
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      03-09-2013, 07:42 PM   #1
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Drives: 2013 BMW 335i xDRIVE Sedan
Join Date: Mar 2013
Location: NYC

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2013 335i xdrive sedan sportline exhaust issue

I noticed now that upon startup every time and also every time I let my foot of the throttle, I hear a brief one second rattle. I went underneath the car and it's the turning of the pin which turns the flap. Is this sound normal? Even when I let off the throttle ? I always hear it. The "geniuses " at BMW said its normal and I know that's complete bs. Any ideas ?
Appreciate 0
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