Originally Posted by Johnny D
The X pipe should go as close to the front section of the exhaust as possible. Let me reword that...The X pipe should go directly after the final collection point of the exhaust.
I personally will be running a magnaflow X pipe resonator in the section before the secondary cats.
why close to the front?
I'm running an H-pipe though... from the multiple threads and articles i've read into, you keep the deep tone from an H-pipe without a lot of raspy effect.