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Originally Posted by NighHawk8Gen
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The way you have the vacuum lines run, you should really install a one way check valve just before the PCV connection. That way when you boost, you won't be pressurizing the crankcase. Even with a new PCV, it will not completely seal and will allow for some pressure to blow by into the crankcase. If the PCV fails, you will be pushing as much boost that the intake manifold sees, past the PCV and into the crankcase.
In the optimal configuration, you should really get a vacuum block and T off the brake booster hose. That would allow all connected hoses to see the same amount of boost or vacuum. In your current setup, the devices connected to your vacuum source are not getting the same reading since you have more than one T-fitting. If you install a vacuum block off of the brake booster, your PCV hose should be connected as in the stock configuration, but you will still need to install a check valve on that hose to prevent the PCV from seeing boost. Here is a PIC for reference:
If you need one, I have a bunch for sale and a few other things in
this thread.