Dosent the catch cans have a filter to the atmosphere?? If not.. Just unplug the intake hose and let it exit to the atmosphere.

I have the 2 hoses from the 3/8s fittings on top of my valve cover go to a catch can with a filter to the atmosphere.. And then 2 days ago.. I plugged theintake to pcv hose. And an a hose from that valve cover port to the ground. My motor does not suck any cank case vapor anymore.

11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!