I had a 3" X pipe on my first gen, I installed a SpeedTech torque arm this Spring, I went with a 3" H pipe. with the same Magnaflow mufflers the change in sound was very obvious to me. The X pipe had a smoother sound and had more of a howl at rpm, the H pipe is choppier more of a muscle car sound I guess, but still sounds good. I liked the X pipe sound better but the custom install wasn't worth it to me.
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