You can fab a boost leak test kit very easily. I made one years ago for my Mazda, and used it a couple months ago on the SHO, after reading a few owners mention the possibility of poorly clasped clamps from the factory.
An air compressor and a few parts from the hardware store. And a spray bottle full of soapy water (snoop).
I can add more details, if you're interested, or just do a Google search. Any turbocharged car owner ought to have one, and make it a regular checkup.
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