Exhaust Mods.

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The magniflow muffler will make a difference for you over the stock, but for performance gains you are better off getting the system. These units were tested, they also have mandrel bends in them which help alot in flow. Most shops do not have such a bender do to the extreme cost. So if you are looking for performance go for the system, if looking for a little performance, good sound, at a little price go to the muffler shop.