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  1. A

    Emission help

    OK, I replaced the CAT, and swapped the O2 and MAP sensor from the other XJ, and did a small adjustment to the TPS. It passed with flying colors....here are the results.... before: read ......Standard HC: 2.95g/m ..... 3.00g/m CO: 63.34g/m ...25.00g/m NOX: 1.90g/m ....4.50g/m...
  2. A

    Emission help

    I was up in the air on this, granted I did have one Jeep that passed all of the sniff test, but failed on the visual. I wasn't sure, but upon looking at the numbers again, the Hydrocarbons are high for my liking (standard is 3.00 g/m and it read 2.95 g/m). I just compared it to my 90' and it...
  3. A

    Emission help

    Ok, I have a stock 88' XJ with a 4.0L w/auto. The motor is stock from what I know, but the head was rebuilt recently. Took it in for emissions today and it passed everything except the Carbon Monoxide measured in grams/mile. It read 63.34 and the standard (max) is 25.00. I am taking it as it...
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