BFI catch can installed and in neutral smokes just like BSH.

[CorneliusRox]

So catch cans are directional (like I was saying on the BFI catch can page). Swap your tubes that go to the CC and it will probably stop (under vacuum). Really you should have two CC's in order to clean it all up. One between the VC and rear PCV, and one between the intake manifold and VC.

You are also going to want to get some directional valves and place one only allowing air to go into the IM (so you dont loose boost), and another only allowing air to go out the back to the pre boost intake (to allow vacuum for the crank case).

[groundround]

So catch cans are directional (like I was saying on the BFI catch can page). Swap your tubes that go to the CC and it will probably stop (under vacuum). Really you should have two CC's in order to clean it all up. One between the VC and rear PCV, and one between the intake manifold and VC.

You are also going to want to get some directional valves and place one only allowing air to go into the IM (so you dont loose boost), and another only allowing air to go out the back to the pre boost intake (to allow vacuum for the crank case).

it does not matter which line you connect to the ports at the catch can, they are both the same.

[CorneliusRox]

it does not matter which line you connect to the ports at the catch can, they are both the same.

One throws the junk to the bottom of the can, the other has a tube that goes up to avoid the gunk. (if it's like others I have seen)
What is happening on yours is you are getting a lot of junk from your crank case (valve cover) into your IM just from vacuum.