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Originally Posted by wstar I posted a DIY when I did mine, over here: http://www.the370z.com/diy-section-d...att-reloc.html . Mine's specific to my setup though (M370 intake manifold, and an empty battery compartment
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Join Date: Mar 2009
Location: NY
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Actually, crankcase pressure/airflow are completely different from NA versus FI. In NA, you will never reach positive pressure inside the intake manifold. During WOT, pressure in the manifold will drop down to zero, the PCP valve will close and crankcase air will vent minimally through the crankcase vent. However, in FI, your manifold pressure will reach up to 12 psi or whatever boost level you are running during WOT. So now the PCV valves close, but you have significantly more pressure venting from the crankcase vent to the air intake piping. How much oil vapor is blown through during this process, I am not sure.
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