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Thread: UEGO Wideband AFR Controller... HELP!

  1. #1
    Join Date
    Jan 2009
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    Fort Worth, TX
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    UEGO Wideband AFR Controller... HELP!

    i have recently purchased a wideband gauge and sensor... in the instructions it says to mount the sensor before the cat(s) for a more accurated reading... but i only have one sensor, and i have 2 cats before the Y. Please help... do i only run one sensor comming from one exhaust mannifold, or do i put the sensor after the Y, Which would be after the cats, but it would get both exhaust manifolds??? PLEASE HELP...
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

  2. #2
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    saratoga springs ,new york {upstate ,adirondacks }
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    Insstall it were the 2 pipes merge together.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

  3. #3
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    even if its after the cats??? it says in the installation instructions that it is more accurate before the cat(s)...
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

  4. #4
    Join Date
    Jun 2007
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    saratoga springs ,new york {upstate ,adirondacks }
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    when i had my stock y pipe on ,allen nelson had me install mine were the 2 pipes merge.i believe i had the 2 cats coming off each manifold b4 the merge ,then i had another after the merge further downstream.it worked fine.
    mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .

  5. #5
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    Mar 2003
    Location
    San Antonio, TX
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    it's gonna read pretty much the same in any location.
    I know, I have about 1000 bungs on my exhaust lol, they all read the same.

  6. #6
    Join Date
    Jan 2009
    Location
    Fort Worth, TX
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    ive been hearing alot that i need to put it between the exhasut manifiold and the cat on the drivers side...
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

  7. #7
    Join Date
    Aug 2008
    Location
    North Texas
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    12,078
    If you put it before the cat it's the same on either side. There is no difference between left and right. Allen knows better than me if after the Y is OK so I'll leave that up to you.

  8. #8
    Join Date
    Jan 2009
    Location
    Fort Worth, TX
    Posts
    143
    they just sadi because the #7 cylinder goes lean first... its more accurate on the drivers side.
    05 Silverado RCSB...
    LQ9, TVS 1900, 4L80e, & EFI live.


    07 Silverado VortecMAX CCSB LTZ Z-71...
    Stock... so far

    08 Cadillac Escalade 6.2 / 6.0... Wife wagon

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