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Thread: High Flow Cats

  1. #1

    Default High Flow Cats

    While high flow cats give me better fuel mileage?
    2000 Chevy Silverado 4WD Classic
    2'' lift Torsion Keys and air shocks
    33/12.50 Hankook Dynapro M/T
    3 1/2'' down pipe back 6" Tip
    Dodge Towing Mirrors
    Smoked Tails, Cab Lights, and Side Marker Lights
    1% Rear and Side Window, 20% Front Tint
    American Racing Wheels/ With a custom black paint
    Cold Air Intake
    Edge Performance Chip
    Custom Audio System
    LED Tails
    Black background headlights and parking lights

  2. #2
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
    Posts
    3,390

    Default

    your trucks current cats are just fine, hi flo cats are a joke, modern cats are good for 400hp.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  3. #3

    Default

    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.
    2003 Silverado 2500HD 6.0L Vortec V8
    2" Body Lift
    3" Suspension Lift
    Skyjacker Hydro 7000 Shocks
    Skyjacker Steering Stabilizer
    35" Tires with 20" American Racing Rims
    Velocity Cold Air Intake
    Billet Throttle Body Spacer
    BBK Performance Headers
    MBRP Cat-Back Exhaust System
    DiabloSport Predator- Soon to be tuned by Diablew

    "Soon to be leveling-kit"

  4. #4

    Default

    Quote Originally Posted by vncj96 View Post
    your trucks current cats are just fine, hi flo cats are a joke, modern cats are good for 400hp.
    X2....Unless you need to replace a bad cat the aftermarket ones are not any better the OEM cats.


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  5. #5

    Default

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

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