Yes, MA is supposed to abide by CARB standards (I think since 2017?). However, inspection is not a state-owned enterprise and some shops do not go the prescribed distance.
I've never had a visual inspection and my non-original DME software has never been detected on any of my vehicles.
I may have been lucky but I think my experience is still currently the norm. For sure, once you've been directed to the MAC, you're done for.
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