I looked at some of the other posts on this topic and they placed a filter on the hose in the middle of the motor which connects to the cross over pipe between the air filter and turbo. I can not tell where the one with the pcv valve hooks into. I think that I should be cutting this front hose with out the pcv and extending it to the catch can, which would place it between the rocker cover and the cross over pipe. The catch can does not vent, so the whole system is sealed just like the single pipe. This is my best guess, but still not 100% sure its right