2003 Cobra "Zipper Pipe" Sound and Fabrication
What's better than an H pipe or an X pipe? Zipper pipe! A "Zipper Pipe" is something I came up with a few years ago that is basically a very long section of two pipes in a dual exhaust where the exhaust pulses from each bank of cylinders can "cross over" and "mingle" anywhere along the section, creating a unique, high-pitched sound. In my mind, a Zipper Pipe is an evolution of an X-pipe, just like the X-pipe was an evolution of an H-pipe.
This is on my 2003 Cobra. There are no mufflers with this setup, (muffler delete) as the Zipper pipe smoothes the sound out enough where mufflers aren't totally necessary.