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pwn · 01-13-2013, 04:18 PM

I guess what I'm really getting at is what size the Y pipe to the twin mid pipes is? If I get a 4" downpipe, do I need a flange down to 2.75? or 3? Whats the size on the other Y going from the mids to the axleback?

Thanks!
Morgan

01-13-2013, 04:18 PM	#4
pwn Private 16 Rep 88 Posts Drives: 2010 Cayman S Join Date: Nov 2011 Location: bay area, ca iTrader: (1)	I guess what I'm really getting at is what size the Y pipe to the twin mid pipes is? If I get a 4" downpipe, do I need a flange down to 2.75? or 3? Whats the size on the other Y going from the mids to the axleback? Thanks! Morgan
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