Washington State Emmissions, What do I need to pass?

Hey Guys, I'm moving to Washington State from Indiana, and unfortunately it looks like my Cat and EGR free car is going to soon have to pass an emissions test. I hear that they only do an OBD2 check in which case I only need to tune out the exhaust codes? So my question is, which ones need to go? I might still slap a high flow cat on the car since I don't want to turn any heads with the exhaust smell that comes from my car.

The should be scanning via OBD2 like you mentioned. So those codes shouldn't be reporting any issues.

I would slap the EGR/soemthing that at least looks like a cat on it. Most of the states that do emissions testing do so with only a plug in to the OBD2 port and a visual inspection for the emissions parts. I ran a full IC etc and still had an EGR sitting there. It doesn't need to function, but it likely needs to be there visually.