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      02-18-2013, 12:13 PM   #268
Area-52
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BMW curious
 
Drives: 2009 135 convert
Join Date: Feb 2013
Location: Texas

Posts: 16
iTrader: (1)

Hi,

My first posting on this forum, and I am new to the 1 series. My car is 2009 135 convertible with the N46 engine.

I have been reading through the posts and specially the DIY section. I will have some questions of my own later today.

Wanted post my observation regarding the "golf tee mod".
I watched the exhaust/muffler flap valve one morning and noticed that as soon as the cold/fast idle drops the valve opens automatically and says open my car and exhaust tone remains constant at low RPMs and has a deep tone.
Could the ECU programing be different for different model years?
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