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Thread: o2's moved.....

  1. #1
    Member
    Join Date
    May 2006
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    97

    Default o2's moved.....

    When you move your o2 sensors down the exhaust it will cause them no to heat properly. Does this cause the switching point to be changed what table can correct this. I know in SCT mustangs there is a table you just decrease 15% to correct so there will be no ses lights and I believe to switch properly.

  2. #2
    Junior Member
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    Nov 2006
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    {B4105} O2 Switch point

  3. #3
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    May 2006
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    Default

    Quote Originally Posted by shallow bay
    {B4105} O2 Switch point
    I started fooling with that I believe i would want to reduce that table correct?

  4. #4
    Lifetime Member
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    Mar 2005
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    I've experimented with the switchpoint settings and found that about 400mv seems to bring down the logged AFR from 14.4:1 to 14.6:1 but thats measureing at the tail pipe with a long tube AFR holder. May be slightly different further up the line. This is a very "fine" change though.
    "Just a tune > yeah right !!!! "

  5. #5
    Junior Member
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    Nov 2006
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    16

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    I'm starting to look into this table in order to resolve some switching errors (CEL) that I'm getting. The 02's don't oscillate as high and low as they should when under light throttle. They jump right to .880-.900 at WOT and right to .005 when decelerating (dfco) so I know the range and response is fine. I noticed that my stock tune was all over the place on the 02 table...I changed it to all 450 for now and I'll see how it goes from there.

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