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Discussion Starter #1
So today I swapped the stock res out and I was shocked to see it was basically a straight pipe... I swapped it out for a vibrant ultra quite I also have the afe muffler delete it made a huge difference In sound.... Im posting this because I haven't seen anyone post a factory res its almost pointless It has two rows of perforation the factory muffler does all the work... makes sense why guys who do a res delete say they dont notice much difference.
 

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