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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.
when my truck had a straight pipe, i got better gas mileage but worse performance... just a guess but once i went to my current setup i probably gained 10-12 hp but lost 4-5 mpg