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interesting thread, it seems that the general consensus is to run the pcv valve as nissan intended but a mazworx engine comes with a custom valve cover that does not allow a pcv valve to be installed, there is only a male -10 an fitting. combine that with the facts in this thread that there is a restictor in the pcv valve line, begs the question how much crankcase ventilation/vacuum does the pcv valve actually provide at idle or mid throttle? and is lowering the knock threshold (by decreasing the octane) for the engine by polluting the intake manifold with oil (by running the pcv valve) of any actual benefit to the engine longevity or efficency ?
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