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how many o2 sensor?

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Old Dec 26, 2006 | 03:16 PM
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Default how many o2 sensor?
how many o2 sensors or on a 99TA LS1?
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Old Dec 26, 2006 | 03:36 PM
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total of 4,
two before each cat & 2 after
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Old Dec 26, 2006 | 04:15 PM
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cool thanks
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Old Dec 26, 2006 | 06:52 PM
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Originally Posted by thunderstruck
total of 4,
two before each cat & 2 after
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Old Dec 26, 2006 | 11:23 PM
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The rear two only tell the computer that the cats are working. The front two govern the fuel trims.
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Old Dec 26, 2006 | 11:54 PM
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stupid question but....are there any difference between the rear and front O2's? My mpg went down A LOT after my header install and i'm tryina find out why.
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Old Dec 27, 2006 | 01:00 AM
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If you put long tubes on you should only have 1 set.
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Old Dec 27, 2006 | 01:56 PM
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Originally Posted by orangeapeel
If you put long tubes on you should only have 1 set.
Not if he has cats and wants to be all hooked up........
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