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Wow I cant beleave no one posted this yet :rof http://www.duramaxforum.com/forum/diy-tech-discussion/7258-louder-whistle-sounds-good.html
Thats a $5 upgrade so it helps a little. I agree with intake and straight pipe helping the most.
Thats a $5 upgrade so it helps a little. I agree with intake and straight pipe helping the most.
