Which on is better?!
 

Which one is better?

Ypipe?
Xpipe?
Hpipe?

i would assume because of the bigger flow area the Hpipe or completely seperate pipes would be best performance wise.

X

H

O

H fo'sho'

Open headers lol

X (better power output, true dual)

The X-pipe is much better than Y-pipe and H-pipe, since an X-pipe is usually associated with a true dual exhaust, while the Y-Pipe and the H-pipe is not