DISA valve looks OK. The seal could stand to be replaced, but it's not completely flat. And the air filter and spark plugs are somewhat worn (I'll replace them) but they're not abysmal. I'm thinking there must be a vacuum leak as the misfire is not contained to one or two cylinders. It's random...every time I pull the codes, it comes back with different cylinders. And now the O2 sensor codes are gone. Next thing I plan to check is the PCV system.

What I don't understand is, why does it only run rough when the SES light is on? Once I clear the codes or sometimes if the light goes off on its own, it's fine.