[MENTION=46]STINGER[/MENTION], question for you. So, that PCV line normally runs straight to the turbo intake housing? Is that correct?
No, thats not correct, the one that goes into the turbo intake housing is the Breather line. You have two separate things happening here (PCV & Breather). I would estimate that 70-80% of the junk oil/moisture/fuel etc will be coming out of the PCV, so if I have to put only one OCC it would be for the PCV first and then the Breather, better to do both though and get it over with.
Things to consider for a proper OCC setup,
1. Good OCC obviously
2. Minimizing the hose length.
3. Minimizing the number of bends
4. Placing the OCC away from heat Ex. turbo or exhaust manifold etc.
5. Using correct size hoses, nothing smaller than the outlet/inlet used in the original hoses.
6. Leave some flex in the hose if the OCC is not fixed to the engine as the engine will move and you don't want it to pull or bend the hose and interrupt the flow or worse etc while you are driving.
You can check GTB's video in this thread, shows exactly were to find the hoses, I will explain below also.
PCV - Behind the passenger side valve cover, near the firewall you will find a rubber hose coming out of the PCV and loops back into the intake manifold. That is the PCV line, you need to have one catch can installed between that line. It is in an awkward location with difficult angles to place the OCC but I did my best with 150degree fittings there.
Breather - Nearer to the front of the driver side valve cover you will see a rubber hose exiting the valve cover going into a steal hose then back to a rubber hose and into the right side intake pipe before the turbo. Same again you need to place an OCC in that line.
For the Breather line, if you are planing to install an intake kit, then I would suggest placing the Breather OCC as GTB did on the driver side behind the intake filter, cause it will be a shorter hose setup not requiring any extra fittings and easier access to the OCC as well.