I'm sure someone will correct me if I'm wrong but an X pipe will give you more of a raspy sound and more top end power. The H pipe will give you more low end power and give you more of a muscle car sound.
o/r x or h pipe that is 50 state legal?? I wouldn't believe that one.....I'm running a Mac Prochamber with cats and I'm not legal by CA standards, but it just depends where you live cause some states have tougher laws than others.
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