i just got my X put in the xpipe....i went with 2.25"...pretty happy with it..i hear the v8 sound but to exaggerated with the noise...all in all happy...will post vid....>>>
comment me if you this quote is true....
""""h-pipe has a deeper growl, x-pipe has a more higher pitch type sound.
h-pipe for more low end power/tq and x-pipe for high end power/tq""""
xpipe x5 - YouTube
X pipe x5 4.4i - YouTube