That's the line I tapped as well, and I'm not registering a vacuum, though my mechanical gauge does get a bit of flutter at idle.
At stock mine is running 0.9-0.95 bar so about 12-14PSI, so you're not too far off really.
At stock mine is running 0.9-0.95 bar so about 12-14PSI, so you're not too far off really.