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      04-14-2012, 09:00 AM   #1
TEAShea
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Drives: 2012 328i
Join Date: Oct 2006
Location: Nebraska

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Disabled control valve on 328i exhaust for better sound

I like exhaust sound. As you all know the 328i has almost none.

I disabled the control valve on the second exhaust pipe. It was even easier to do than on the prior generation car. This value is electrically operated instead of pneumatic. I had been concerned that I would have to cut the control stem or fuss with the wiring - but was concerned about throwing a code. Turned out to take exactly 30 seconds to disable mechanically.

BTW you can check to make sure the valve is open by feeling if the exhaust is coming out of the second pipe.

The bad news is that it made very little difference in sound.

So, now I am on to stage two of my options for getting a little more sound. I will keep you all informed.

Tom
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