Originally posted by ds3juice
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Scenarios we have tested
1. Completely capped rear PCV and a catch can on the front PCV. Results was excessive smoke and oily turbo and hoses, the catch can caught just a bit a moisture at the beginning and a small amount of oil.
2. Rear PCV vented to atmosphere via catch can, installed blanking cap on manifold and standard front PCV. Results were that rear catch can was bone dry, seems as absolutely nothing was passing through it. Front PCV heavily oiled and leaking onto cam cover. Turbo and pipes heavily oiled.
3. Front and rear PCV pipe via catch cans. Results rear PCV catches a lot of oil, and small amount of moisture. Front PCV just a small amount of moisture. Turbo and pipe work bone dry.
Removing internal flaps and valves is something I wanted to try but you have to destroy your cam cover to get to them.
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