what is beater H pipe or X pipe
 

what is the different between the to. which is beater for the street

my understanding is....

the X pipe flows better, allows better scavenging, sounds better than the H.
the H pipe is not as efficient as the X but better than none at all, and in most applications, an X wont fit, you have to make do with the H.

Check this article out:
http://superchevy.com/technical/engi...t/0505phr_exh/