exhaust X Pipe

[Richard]

Originally Posted by Joyridin

The H pipe always made sense to me, but the X pipe doesn't in some applications. I was a 3" dual exhaust on a truck with an X pipe where the center of the X was roughly 3". If you are going to take 2 3" pipes and narrow them down to 1 3" pipe, why even bother going back to the dual 3" pipes after that point?

I tend to think of an x pipe kind of like the venturi's in a carb. The throat in the carb necks down to speed up the air. If it goes back to a single pipe diameter "true X" personally I would not use.