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High Flow Cats

Discussion in 'Performance & Fuel' started by MTM, Nov 7, 2011.

  1. MTM

    MTM New Member

    While high flow cats give me better fuel mileage?
  2. vncj96

    vncj96 New Member 1000 Posts

    your trucks current cats are just fine, hi flo cats are a joke, modern cats are good for 400hp.
  3. Metaluzc

    Metaluzc New Member

    Only reason to get hi flow cats is if you NEED to replace the stock ones or you find a great deal on some aftermarket ones.
  4. sstoner911

    sstoner911 New Member 1000 Posts

    X2....Unless you need to replace a bad cat the aftermarket ones are not any better the OEM cats.
  5. MTM

    MTM New Member

    Wow i'm very glad that i posted this.....glad i didn't buy cats

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