Mustang GT Flowmaster

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Uploaded by on May 20, 2009

My 2003 Mustang GT before and after the exhaust mods that i have. first is stock, then after the weld in flows, then after the cats were cut out. Last ones the best.

might have made a mistake..not sure if the first one has flows or not....

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Uploader Comments (t0j16)

  • Do you have the check engine light after the cats came out? I did the same thing to mine but I can't get rid of the check engine light and also I noticed a slight increase in gasoline consumption

  • yeah i had the check engine light on. but i bought a diablosport predator handheld tuner, which i was able to turn it off with. yeah i get about 15 mpg. but i also have 3.73s too, and an auto

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  • cats reduce pollution but they also restrict flow on your exhaust witch will cut some power.

  • Dont the cats just make the pollution less?

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