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      10-04-2012, 10:43 PM   #1

Drives: E90 N52 AT
Join Date: Apr 2011
Location: Vancouver, BC

iTrader: (4)

Xpipe In your Exhaust System?

I have been piecing together oem mid pipes and manifolds to make a stocker system with no cats. The oem muffler seems to be boss in keeping back pressure. Just wondering if anyone has an x pipe in their system to increase performance. I have been reading a little about their usage in dual exhaust systems and their ability to increase power and torque due to exhaust scavenging between cylinders but we already have a y-pipe/resonator section that joins the two pipes pre-resonator. Would the addition of an xpipe or replacement of the resonator with an x-pipe be of benefit?