they dont do a sniffer test at all by me. they did nothing really, obd2 scan, and gas cap. but they did have floor cameras installed with a large monitor so they can see your cat.
i passed with 4 bald tires and a broken side view mirror and the abs light on lol
oh, and then got questioned about the old inspection sticker being a fake lol i did buy it like that tho. last owner lived in Newark, fake stickers are all over the place.
i hope i pass, im due in april.