Well, you could take the cap off the top port on the MityVac and connect the hose there. But the guage only reads vacuum, not pressure. And pressurising something that way is clunky at best. Maybe try a bicycle pump with a universal rubber attachment like you'd use to blow up a raft.

I don't have much ALDA experiance, but believe it should hold pressure up to about 13 psi - that's the output of the turbo, right? Don't know about holding vacuum. If the ALDA is off the IP, then you should be able to see the rod moving when you apply air pressure.

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References