Quote:
Originally Posted by JLMounce
That's correct, it's functioning like a PCV valve where you're moving pressure from the crank case to the intake, until there is a surplus of pressure and at that point the draft can will vent the pressure.
The breather has some foam in it to keep oil contained, but is otherwise open.
I did not have to change anything in my tune when I made this change and have not witnessed any changes in my reported AFR's or my short/long term learn trims.
The big thing this is doing for me is providing ventilation operation during high vacuum/high rpm situations where a stock type PCV valve would otherwise be closed.
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Any increase in engine vacuum @ idle after the upgrade ?