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      08-10-2008, 08:46 PM   #40
TP 135i
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Drives: 2008 135i SGM MT
Join Date: Nov 2007
Location: Finksburg, Maryland

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Quote:
Originally Posted by d3syd View Post
Im really confused......

Sorry guys this topic has be discussed ad nausium but this is what I have observed and the way I see it:

When you start the car cold, the flap is closed and exhaust gas exits from only the left (?) pipe. After a little while the flap opens with a little klank noise.
The valve doesn't open with temperature, it opens with rpm. Even with the engine up to operating temp the valve is closed until you get over 3000 ish rpm.
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