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Old 09-07-2008, 12:41 PM   #1
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Im living in Oregon now and they require emission checks. I want to get long tube headers, but now I have to be able to pass emission checks. I believe all they do is diagnostic scan. So will O2 sims allow me to pass...If I delete the O2 sensors after the cat will they be able to tell with the diagnostic scan???
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Old 09-07-2008, 03:29 PM   #2
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I don't think either way would be a problem. I just tried with my car, and even though I knew the LTs were not going to pass the visual I wanted to see how they would do on the sniffer. My car's tuned to disregard 02s-input and that didn't come up as a problem on the OBDII scanner. I NOX were high but I didn't have a problem with regards to the 02s. It won't hurt to try
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