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  1. #1

    Exclamation Removing Catalytic

    I have an 07' silverado (new body) and I am contemplating removing my catalytics for better performance what are the pros and cons of this.

  2. #2

    Default

    Dont do it, thier on there for a purpose and you violate several federal and state laws if you do.
    This shouldnt even be a discussion.

  3. #3

    Default

    Don't remove them...

    Replace them with high flow CAT's...

    Best of both worlds.
    Pavement sucks... :grrrrrr:



    1994 K1500 4x4 Ext. Cab
    PCM chip and Xenon 8000k bulbs
    350cu.in bored over .050"
    balanced Crank, 10:1 compression
    Flat top pistons,cam,ported heads
    Option Racing Cold Air Intake
    Holley Throttle Body Spacer
    Accell Igition, 45kv coil
    FloTech Headers, no CATs, dual exhuast
    Goodyear Silent Armor A/T 305/70-16
    Pioneer SupertunerIII CD USB Bluetooth
    Kicker ZX200.2 ZX Amp
    Kicker Audio COMP 10" Subwoofer

  4. #4

    Default

    I Agree With tbplus10......100%...Don't do it.

    MIKE


    99"SILVERADO
    5.3 l 3.73 l G80
    BLACK BEAR CUSTOM TUNE
    SNUGTOP l COLORMATCH l KATZKIN










  5. #5

    Default

    Not a good idea. It will void whatever warranty you have left, set off your ses light and really not improve your performance.
    Missoula, Montana 2009 Silverado 1500 Crew Cab LTZplus Z71 6.2L Imperial Blue

  6. #6

    Default

    It's also like a $25k fine if they catch you.
    Dan
    1999 GMC Sierra 2500 350 vortec
    1967 Jeep M725 ambulance 230 tornado
    1990 Cherokee Limited- 3 inch lift on 33's
    ...and every one of em has issues

    If you have any questions or problems don't hesitate to send me or any other GMTC moderators a PM

  7. #7

    Default

    Thank you fellas I will take your advice and pass on removing my CATs.

  8. #8
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
    Posts
    3,386

    Default

    truck cats already are they are rated for high HP already, no need to go and buy "high flow", unless your cats are actually clogged there is no reason to replace them
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

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