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      10-05-2012, 12:24 AM   #3
Drives: E90 N52 AT
Join Date: Apr 2011
Location: Vancouver, BC

Posts: 2,681
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Originally Posted by Johnny D View Post
I see no benefit if you keep the y-pipe/res of the stock exhaust. If you were to set up a true dual setup then yes, I think it would be beneficial.
It's clearly beneficial in a dual setup for eliminating drone/rasp and increasing performance but we don't have a full dual set up. In any case, even with an x pipe in stead of the resonator it still needs to go into a y if the stock muffler is being used. If you have a dual inlet muffler like a magnaflow or a flowmaster then it changes the game, but my plans involve the stock muffler.
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