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330i zhp · 06-25-2013, 08:30 AM

I wonder what the sounds diff is - I have the valves zip tied open on mine...where as yours don't have any valves

Do you know if there is a difference inside the muffler chamber?

06-25-2013, 08:30 AM	#5
330i zhp Private 4 Rep 89 Posts Drives: X5M and SCd Touring Join Date: Jan 2011 Location: Washington, DC iTrader: (0)	I wonder what the sounds diff is - I have the valves zip tied open on mine...where as yours don't have any valves Do you know if there is a difference inside the muffler chamber?
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