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Old 10-08-2012, 01:31 PM
OptionsTrdr OptionsTrdr is offline
Officially Welcomed to the 'Fest
Location: Chicago
 
Join Date: May 2011
Posts: 103
Mein Auto: 335i
The exhaust flap is open at idle even without the golf tee mod. With the windows open you can even hear it close as you start to drive away.

Here is how it works (at least on my car so I'm assuming this is true for other 335's):

Without golf tee mod:
Idle - open
Low RPM's while driving - closed
Higher RPM's - open

With golf tee mod:
Always open
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