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Passing emissions w/ o2 simms?

This is a discussion on Passing emissions w/ o2 simms? within the Exhaust forums, part of the Performance category; I am going to put the o2 simms on my truck. Will it effect my emissions testing? Our county just ...

  1. #1
    Work hard - play more whtZ71's Avatar
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    Passing emissions w/ o2 simms?


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    I am going to put the o2 simms on my truck. Will it effect my emissions testing? Our county just went to the stricter emission testing. (Montgomery Co.) I didn't know if it would show up on their computer. I heard from one guy that using them would result in a fine. has anyone heard this before? And is there a difference in the ones you buy or make your own kind?
    98 Z-71 - 5.7 Vortec - 315/75/16 MT/R's - 3" body - 6" fabtech susp.
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    03 Tahoe Physh1's Avatar
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    The o2 simms will be fine. The only problem you may have is if you do not have cats and they use a tailpipe sniffer. That sniffer will tell them whether or not you have cats and whether or not they are good or bad.

    If you have cats and you have the o2 simms you'll be fine.

    Cameron
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    Work hard - play more whtZ71's Avatar
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    Originally posted by Physh1
    The o2 simms will be fine. The only problem you may have is if you do not have cats and they use a tailpipe sniffer. That sniffer will tell them whether or not you have cats and whether or not they are good or bad.

    If you have cats and you have the o2 simms you'll be fine.

    Cameron
    Thanks,
    I have 2 cats and they are new.
    98 Z-71 - 5.7 Vortec - 315/75/16 MT/R's - 3" body - 6" fabtech susp.
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    03 Tahoe Physh1's Avatar
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    Originally posted by whtZ71


    Thanks,
    I have 2 cats and they are new.
    Sounds like you'll be fine.

    Cameron
    / 2003 Tahoe LT / 22" Boss 330 / Heinz 57 3"-5" drop / Pioneer / US Speedo / De-badged / E-fans / BlackBear91 / Corsa Sport / "Big 3" /

    My 03 Tahoe Build Thread

    "The power of accurate observation is frequently called cynacism
    by those who don't have it.
    " - George Bernard Shaw

  5. #5
    SLACKIN' CARLISLE BISH Jokeman's Avatar
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    Why do you want to use o2 sims if you have cats? I thought o2 sims "tricked" the computer into thinking you had cats. As Cam stated, if they use a tailpipe sniffer, you will not pass without cats

    If its loud, fast and runs on flammable liquid......count me in.
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    Work hard - play more whtZ71's Avatar
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    Originally posted by Jokeman
    Why do you want to use o2 sims if you have cats? I thought o2 sims "tricked" the computer into thinking you had cats. As Cam stated, if they use a tailpipe sniffer, you will not pass without cats
    Because the sensors are 78.00 ea. I am getting a code and the ses light stays on. This code P0420 relates to the sensors and I just replaced the front ones. So it must be the rear ones.
    98 Z-71 - 5.7 Vortec - 315/75/16 MT/R's - 3" body - 6" fabtech susp.
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    This is All You'll See Boosted-Z71's Avatar
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    WhtZ71 this codes is related to the the rear (after Cat) O2 sensor on Bank 1 (Drivers side of the truck), The GM book in short says to check for burnt, shorted wires to this O2 sensor, 0430 code is the (passenger side) Bank 2 of the truck. It also says to check for weak spark conditions or retarded spark, have you changed or checked your distributor cap lately? The Vortecs do not like the cheaper caps & rotors that you get at some of the mass auto parts stores. If you want the entire T/S guide PM me with your e-mail address & I will scan them & mail it to you.

    Im sure the O2 simms will take care of the light issue, But Im not sure about passing the emission testing, never been down that road.

    Boosted
    98 Ext Cab Chevy-Z71, 5.7, Built Front to Back. 87 SB 5.7 Vortec / TBi Combo, Getting Faster Everyday

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    Work hard - play more whtZ71's Avatar
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    Originally posted by Boosted-Z71
    If you want the entire T/S guide PM me with your e-mail address & I will scan them & mail it to you.


    Boosted
    Thanks. You've been PMed
    98 Z-71 - 5.7 Vortec - 315/75/16 MT/R's - 3" body - 6" fabtech susp.
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    This is All You'll See Boosted-Z71's Avatar
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    You should have the T/S guides, let me know if you have any problems with the files

    Boosted
    98 Ext Cab Chevy-Z71, 5.7, Built Front to Back. 87 SB 5.7 Vortec / TBi Combo, Getting Faster Everyday

  10. #10
    Work hard - play more whtZ71's Avatar
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    Originally posted by Boosted-Z71
    You should have the T/S guides, let me know if you have any problems with the files

    Boosted
    Got them.......no problems. Thanks again. You should have an email by now.
    98 Z-71 - 5.7 Vortec - 315/75/16 MT/R's - 3" body - 6" fabtech susp.
    http://www.cardomain.com/id/wht98z71
    Work is for those who don't know how to fish.

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    This is All You'll See Boosted-Z71's Avatar
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    Thanks, I got the e-mail & pics & I am making a set this weekend for a friends Camaro.

    Thanks

    Boosted
    98 Ext Cab Chevy-Z71, 5.7, Built Front to Back. 87 SB 5.7 Vortec / TBi Combo, Getting Faster Everyday

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