I had slightly higher blm's at idle when I installed the RJC valve 3 years ago. I ended up using it as a check valve and threading a fitting in the bottom and connecting the stock style PCV after it. BLM's back to normal, but it rattled horrible like a collapsed lifter. I have since installed a oil separator which I screwed the RJC directly to the dry side. Stock PCV in the intake with a hose to the other side of the separator. Now it's quite.
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