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I don't think your smog guy fully understands what mods you have. If he's actually doing a legit smog, you will not pass with your catalytic converters removed even on stock tune. I think maybe he thinks you just have an aftermarket exhaust that isn't messing with emissions but the tune isn't letting a monitor pass which is false. If this is a legit smog you need to throw your cats back in (you only need primaries, you can leave secondaries out if you removed the secondaries), flash stock tune and do a drive cycle. There are certain tunes out there that mimic obd readiness so it'll show all monitors are on but no vendor will publicly say their tune does that as its illegal.
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