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From a previous poast it sounds as if shorty headers are not worth the investment. What about muffler mods ? Any performance increase or just more sound? What's your favorites ?
I have a off road x pipe with stock mufflers and I like the sound. PLus its cheap. if I not puching it its not to loud, but if I do, people think I have a exhuast system. It soundsreal good after2500rpm.