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Steven1077 · 07-02-2014, 05:49 PM

My 435i sounds like a tank when I start it from cold and only one pipe is open. after about a minutes it gets a lot quieter, I don't think the left side opens until I hit 4k rpm

07-02-2014, 05:49 PM	#2
Steven1077 Lieutenant Colonel 240 Rep 1,756 Posts Drives: M140i Join Date: Jan 2014 Location: London England iTrader: (0)	My 435i sounds like a tank when I start it from cold and only one pipe is open. after about a minutes it gets a lot quieter, I don't think the left side opens until I hit 4k rpm
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