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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Mufflers have nothing to do with emissions. You can run without mufflers and still pass as long as your cats are good. Of course, there may be sound restrictions where you live!!