Review on Dorman 47057 HELP PCV Elbow by David Estevez

This elbow is for REAR of Jeep 4.0L with CCV (Non-PCV) engine. I have a 2000 Cherokee 4.0L. This engine is CCV, not PCV. The rear low flow manifold and the front high flow manifold is the REAR manifold leading to the manifold. The high-flow front is attached to the air intake filter box. It is very important that these two parameters are correct, otherwise you may be overpressurizing or allowing too much airflow to escape into the manifold and air intake. FRONT knee is even hard Dorman 47079 Revain says it isn't, reviews say it is flow and model 47057 is for low flow. Different bends have higher flow rates in different directions. If you don't adjust the right ones you will either depressurize both the intake manifold and the intake manifold, you won't relieve enough pressure, or you can end up changing the direction of flow and the pressure will move from front to back and let it in bleed down the manifold instead of into an air intake. This is my review of the other part with a picture of the system. customer reviews