cobra exhaust sound explanation?

jesnamy00GT said:

Next question - Is there a big difference between the x pipe and h pipe? I've read some post that say the H pipe will give more of a muscle car sound. Is there any difference in performance?

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X's are slightly better higher in the rpms where H's are slightly better down low

as far as sound:

X = more exotic, loud/sometimes raspy
H = more throaty and "mellow"

We build both H pipes and X pipes-

X pipes make more power up top AND down low-

Some of the real crappy Xs will only make decent power up top-

But a well designed X pipe will out perform an H in EVERY aspect-

Brent
Magnaflow Performance

GNN60GT500 said:

We build both H pipes and X pipes-

X pipes make more power up top AND down low-

Some of the real crappy Xs will only make decent power up top-

But a well designed X pipe will out perform an H in EVERY aspect-

Brent
Magnaflow Performance

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By how much? I'm guessing 3-5 hp tops. And do you have some dyno-graphs that you could post up. I'm not saying you don't know what your talking about, but I've seen some comparisons in magazines that show X is a couple hp better up top and H is a little better down low. They also mentioned the h was louder, I know I know magazine tests are biased or crap or whatever. But they had dyno-graphs.
I was just wanting some elaboration on your part.