Originally Posted by CoolGuy094

There are many ways to skin a cat when it comes to catch can setups.
- You can run the PCV port from the valve cover to the catch can, then from the catch can to the PCV port on the intake manifold.
- You can run the crankcase vent port from the valve cover to the catch can, then from the catch can to the crankcase vent port on the air intake elbow.
- You can run a dual catch can setup and do both of the ones above.
- You can buy a catch can with two inputs and two outputs and do both of the ones above.
- You can run both the PCV port and the crankcase vent port from the valve cover to the catch can and have the catch can vented to atmosphere via little air filter or a vent tube, then cap the ports on the intake manifold and air intake elbow.
- And so-on and so-forth.

I chose to run both valve cover ports to a single vented-to-atmosphere catch can and cap off the ports on the intake manifold and air intake elbow. As you mentioned, it is against emissions regulations to do it this way.