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      09-03-2012, 10:30 AM   #9
CALWATERBOY
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Drives: 2009 E93 N54
Join Date: Jan 2011
Location: San Francisco

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Quote:
Originally Posted by cstmx_ryder View Post
....when I was at the BK drive-through (getting their $1 fruit smoothie, lol), I rev'd a little, and upon deceleration, I heard a 'flap flap' sound from what appears to be my exhaust? WTF......It sounded like a playing card stuck to the frame of a bicycle and it flapping against the metal spokes of the bicycle wheel.....

Anyone have any idea what the sound might be?
Can you raise your ride? Check for exhaust leaks.

My noise prob solved: Tightened flange bolts upstream o'cats.
  • 21 N/M torque - turbo motor
  • 45 N/M torque - non-turbo
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