I'm planning on installing a KazeSpec Engineering 2 Chamber Oil Catch Can on my naturally asperated (Bored to 2.0) NA. Do I need a check valve on the intake line? I'm also doing my own catch cans on my 1996 Dodge Ram, as I just replaced the engine with a properly rebuilt one, so now I should have No Sludge issues, like in the past and I'm not sure if I need one there as well. So are check valves necessary on intake catch can lines or not is the Question. Thanks,