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Catalytic converters

This is a discussion on Catalytic converters within the External Engine forums, part of the LSx Technical Help Section category; I just got a 98 z28, all stock except for a SLP intake kit. I live where there is no ...

  1. #1
    CrapMaster samson_420's Avatar
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    Catalytic converters

    I just got a 98 z28, all stock except for a SLP intake kit. I live where there is no emissions so I could take my cats off. Is it worth the time?

    The most I will be doing to my car is the cat removal maybe + a cat back. And maybe some day down the road some slightly lower gears(I currently have 2.73's),maybe a intake manifold and a power programmer, I guess a larger throttle body too.

    And that's it. I just want to keep it stock for quite a while.

  2. #2
    Life in the Fast lane sunsetorangess's Avatar
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    Met. Sunset Orange
    01 SS

    As far as your cats, You have several options, either gut them, Put in some cat by pass pipes or go the smart way and pick up some long tube headers, Ory "y pipe without cats", and then pick a free flowing catback. This will help your motor breath on the way out, as far as the intake, you can pick up a ls6 intake with some block off's to eliminate the Egr.
    No matter which route you take with the cats, you will throw a a few codes, the rear sensors will pick up that fact your cats arent working, although it will not cause any issues it will just be annoying. To eliminate your Ses light you will either need to have the codes deleted or pick up some sims.
    J
    2001 SS, Its not the car its the Driver that matters....

  3. #3
    CrapMaster samson_420's Avatar
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    Kind of what I figured. I wan't to stay away from the headers for now. I thought about gutting them but I want keep them intact for later(If I ever sell the car). The Y pipe with no cats sounds good. But, where can I get one? Or does it have to be fabed up?

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    Life in the Fast lane sunsetorangess's Avatar
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    Thunderracing.com has some Cat bypass pipes, that bolt in place of your stock cats or you can check around with exhaust shops and see if anyone can hook you up
    J

  5. #5
    CrapMaster samson_420's Avatar
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    I will check out the Thunderracing.com and see what they got. The shops around here are weiners, they won't do any side work. I was thinking of getting a welder, but eh.

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