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gutting your cats

This is a discussion on gutting your cats within the General Help forums, part of the LSx Technical Help Section category; what is all involved after you gut them. will it throw a code just curious...

  1. #1
    Member ldanny's Avatar
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    gutting your cats

    what is all involved after you gut them. will it throw a code just curious
    G2 lid,removed EGR/AIR,LS6intake,Shaner S3 Throttlebody,Edelbrock Ti-Tech coated LT's,Lanes 3" TD's with Flo-Pro Twister mufflers,Textralia Exo-Skel Clutch,Adjustable LCA & PHB,UMI boxed SFC,Pro 5.0 shortened 1",Raptor Shift Light,HPE Tune Made 359/361 through a slipping clutch,cats,and catback.

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    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
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    After you gut them, you will throw a few codes for low catalyst or efficency.
    J
    2001 SS, Its not the car its the Driver that matters....

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Yep.. Mine does..

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    Member ldanny's Avatar
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    sense they are the back 2 sensors that will be throwing the code it wont effect the air to fuel mixture right. how do you get the light off

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    Senior Member ss~zoso~ss's Avatar
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    SS: NBM, tan top
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    o2 simulators, google it

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    ive heard the sims went bad due to near exhaust heat... just get it tuned out.. sims are 99 bucks from the ws6 store tho...

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    Member ldanny's Avatar
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    so basically o2 sims just block the sensors from sending a code to the computer

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black


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    Member ldanny's Avatar
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    i think ill just wait till i get headers and full exhaust then tune it all at once

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    Good idea... mine is a daily driver so i cant really do anything to it unless its gonna be a quick fix...headers have to wait... ive been driving around a while with the 02 codes... its just annoying...

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    Member ldanny's Avatar
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    yeah whick o2's are they the front or back

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    the front regulate the mixture of air/fuel.. you get rid of those im pretty sure your not gonna be happy...the rears make sure the cat is there/functioning...

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    no i meant what your code that you were throwing was you said your light was on

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    p0420 p0430 left and right 02 sensors... rear..

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    Member ldanny's Avatar
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    oh ok so uve already gutted your cats

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    The previous owner gutten the left cat and removed the right cat... works fine.. runs great.. sounds great..

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    Member ldanny's Avatar
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    yeah i bet. i heard they r much louder when u gut them. so im gussing your waiting until u have 2 get it inspected to tune it?

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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    No inspection here. just about get away with anything.. even murder.. no joke...
    but Im gonna have a pipe welded in instead of the gutten cat and get the EGR and AIR system tuned out as well. As for loudness.. when i cut the cat off my truck it made the sound a lot deeper.. not much louder tho...depends on the muffler i guess...

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    Member ldanny's Avatar
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    hey so do u no how you can tell if you already have an o2 sim

  20. #20
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    79 T/A -91 Firebird
    1998 Trans Am -Oynx Black

    alright.. me confused...!
    you dont have to the rear o2s to function and drive
    02 sims just get the light off... they plug into the harness where the 02 harness would go...

    thats all...

    hah

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