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Just came back from smogcheck and it was passed barely. HC(PPM) max allowed 61 passed w/60, NO(PPM) max allowed 493 passed w/490. Don't know what these numbers mean -anyone cares to explain?. The tech left a note to check egr value/passage. Also, could O2 sensor has any contributions to this?

This is what I found. Could someone confirm whether this is normal on a 95 EGR Passage? I've seen a few videos on yt and can't find anything like it. I thought there should be caps to drill and hammered out.

note: egr valve and the opening as shown here were cleaned couple years ago with carburetor cleaner but didn't know anything about the passage until now.
Thanks

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