How NOT To Test For Boost Leak

I finally fixed the vacuum leak, but I still have some serious boost lag. Chances are, there is a leak somewhere in my intake. So, I need to pressure-test it for leaks. During the testing, I could hear a “bubbling” noise, so I think my oil seal may be leaking pressurized air into the oil return line. I’m not sure. Give it a listen and tell me what you think.

(Scion FR-S) (Subaru BRZ) (Toyota 86)

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