Thread: Catless wonder?
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Old 11-10-2019, 07:26 PM   #12
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Join Date: Mar 2018
Location: Utah
Posts: 2,380
Originally Posted by JimmyBad View Post
I was a state inspector here in Texas and we had to do an emissions test in the city I'm in (no smog). With the factory ROW tune the ECU does not monitor the cats so it will show "N/A" during testing when plugged in, as only the monitors that are enabled by the tune will show "ready" or "not ready". Some cars have more monitors enabled than others for some reason (some cars don't have an SAI system here in the US for example). So, all of my enabled monitors with the factory ROW tune were "ready" during testing with no cats. However, it will obviously not pass a smog test.
Im confused by this, but probably just because of terminology. To me, "smog- check" and "emissions- testing" are the same thing. Both terms refer to testing, without distinguishing method of testing.

Is that how you're using the terms?

If so, then the ROW tune won't pass a plug- into-obd2 test in your county in Texas?

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