Hey guys, so I’m thinking of getting headers for my VQ. My main concern is will I pass emissions since my RacingLine Y-pipe has no Cat and ofcourse when I get the headers they dont have a cat either but from what I’ve read the 02-04 Altimas have 3 cats, I could be wrong. I have no issues passing Emissions right now with the Y-pipe but I’m just worried about combing the headers and Y-pipe.