This is where the crankcase ventilation system is.
The low pressure side has the internal PCV valve and the high pressure side is where the flapper hose assembly connects (I have already removed it in this pic)
This one has some notes to help see what is what. Note #4 should say cyl 4,5,6.
This is the flapper hose assembly that needs to be removed and disassembled. Use a heat gun to warm up the ends then they just pull right off with little effort. The right is the flapper and the left piece is a heater element that is used in freezing weather.
This is the flapper and heater parts. Top left is the internal PCV that is getting replaced with the part below. That replacement part is what makes the low pressure side of this project possible and it allows us to direct the dirty air into our catch can to try and clean it up some before we return it to the intake manifold.
