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i got exhaust questions

This is a discussion on i got exhaust questions within the General Help forums, part of the LSx Technical Help Section category; my check engine light just came on. the code says its either the o2 sensor or the catalytic converter (bank ...

  1. #1
    boycott wal-mart
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    silver
    98 T/A WS6

    i got exhaust questions

    my check engine light just came on. the code says its either the o2 sensor or the catalytic converter (bank 2). heres my question; if i take out the cat and run straight pipes, eliminating the o2 sensor(s), will the check engine light come back on after it is cleared? anybody know for sure? thanks.

  2. #2
    Member Bandit1's Avatar
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    black
    2002 TA WS7

    the ses light will stay on unless u put in o2 sims

  3. #3
    boycott wal-mart
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    silver
    98 T/A WS6

    what are o2 sims? where do i get them and how are they installed?

  4. #4
    Member Bandit1's Avatar
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    black
    2002 TA WS7

    u can get em from any of our sponsers an o2 simulator replaces the rear o2 sensors it tells the computer ur cats r workin properly when in fact u dont have cats

  5. #5
    boycott wal-mart
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    silver
    98 T/A WS6

    so the connector for the o2 sensor is still there, just with an o2 sim plugged into it?

  6. #6
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    Yes, the 02 sims tell the PCM nothing's wrong. I'd delete both cats not just one, you can get 02 sims or just have the codes turned off. Maybe the P0430 is because the cat is clogged????

  7. #7
    boycott wal-mart
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    silver
    98 T/A WS6

    which side is bank 2?

    i think bank 2 is the passenger side exhaust. anyone know for sure?

  8. #8
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    Quote Originally Posted by Bandit1 View Post
    the ses light will stay on unless u put in o2 sims
    Screw sims.
    Find a shop that can turn the code off via HPT, LS1Edit, EFILive, etc...
    Cheaper in most cases.


    Quote Originally Posted by Semperfiws6 View Post
    i think bank 2 is the passenger side exhaust. anyone know for sure?
    Bank 2 is passenger.
    Is it sensor 2?

  9. #9
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    P0430 is passenger side (Bank 2, Sensor 2), P0420 is drivers side (Bank 1, Sensor 2).

  10. #10
    old timer blue02Z's Avatar
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    you also have bank 1 or 2 with sensor 1 for the pre-cat sensor

  11. #11
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    red
    1998 chevy camaro ss

    i have a 98 ss with gutted cats and a single to dual system w/ no muffler and was thinking of adding the borla muffler instead of the straight through exhaust. my question is if i will gain or lose a good amount of power? also i dont have o2 simms but the car does run pretty strong, i was told o2 simms will improve the performance and keep my ses light off? any info?

  12. #12
    old timer blue02Z's Avatar
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    Quote Originally Posted by sscamaro1384 View Post
    i have a 98 ss with gutted cats and a single to dual system w/ no muffler and was thinking of adding the borla muffler instead of the straight through exhaust. my question is if i will gain or lose a good amount of power? also i dont have o2 simms but the car does run pretty strong, i was told o2 simms will improve the performance and keep my ses light off? any info?
    as far as power, proly nothing noticeable with the muffler swap. but o2 sims will keep off the SES light and proly make it run alittle smoother. i've got them on my car.

  13. #13
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    red
    1998 chevy camaro ss

    ive heard that with no muffler and gutted cats, there is no backpressure and i may be losing low end torque. i just dont wanna put the borla on and wish i didn't . thanks for the info.

  14. #14
    Slower Than a 3rd Gen juiced99ws6's Avatar
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    go with a pair of dynomax bullet mufflers. wont quite you down much at all and will still offer a little back pressure and refine the exhaust a little

  15. #15
    old timer blue02Z's Avatar
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    o no! you guys are gonna get flamed for saying back pressure. lol

  16. #16
    Member SSpdDmon's Avatar
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    Quote Originally Posted by blue02Z View Post
    o no! you guys are gonna get flamed for saying back pressure. lol
    Don't even get me started on this!

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