For an X to work, you can't just run one pipe through another. If you do, you simply force ALL the exhaust to go through the area of ONE pipe. When a proper X pipe is made, the area of the merge is GREATER than the area of one pipe, so it's not a huge obstruction. Using a muffler such as the mentioned (pictured below) would result in MASSIVE horsepower losses.
They simply ran one pipe through the other, creating a MAJOR obstuction.
You've been warned....
![[linked image]](../../../../../../static.summitracing.com/global/images/prod/large/wlk-17552_cutaway.jpg)
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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
