Thread: AR Downpipe Catted 5" N55
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      05-09-2012, 05:35 PM   #22
BMW_Belgier
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Drives: E92 335xi n55
Join Date: May 2012
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Now you guys get me worrying

My PE has the golf tee mod now. If i enable the valve again when i would install the DP, would this compensate the extra noise?
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