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Message: <blockquote data-quote="Chris" data-source="post: 338507" data-attributes="member: 1">There isn't much to it. Go to your local exhaust shop and have them install a new muffler and pipe from the cat back. That's all it's going to take to make you engine sound louder is a different muffler. The 4.0 isn't a great sounding engine though to begin with IMHO. It tends to drone, so I would stay away from loud exhausts unless you like driver fatigue.Don't waste your money on any of the so-called "cat-back" systems you see online. They are an absolute waste of money. They charge you $500, when an exhaust shop will build you the same setup for $200.</blockquote>

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