Bimmerfest - BMW Forums - View Single Post - Is that a catch can? Yes it is. Goodbye CCV
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Old 02-17-2012, 10:03 AM
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eparayno eparayno is online now
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Location: Vista, CA
Join Date: Jan 2012
Posts: 1,140
Mein Auto: 2001 530i
The system is always pressurized, hence the use of a PCV of some sort when connected to the intake manifold (a variable-restriction valve that can react to changing pressure values and intermittently allow the passage of the gases to their intended destination (which nowadays is the engine's intake stream)) Due to the EPA this has become standard. The stock CCV is a pressure valve that just has such a horrible location/configuration for such a simple task.

Poolman noted running rich when connected to one inlet on the distribution piece due to the front 3 cylinders pulling in air. He solved it by using spacers but I just want to incorporate both while trying to keep everything looking and running like OEM.
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