Originally Posted by MADDOG
Ya know, actually I'd do it like this:
Headers > Cats > XPipe > Mufflers > Resonators
That XPipe will help maintain torque and equalize the exhaust gas pulses, promoting exhaust scavenging.
I know the general purpose of X/H-pipes in true duals, but what are the differences in putting an X/H-pipe before the Cats and after the Cats?