Procharger vacuum line question

[Jay-rod427]

http://injectordynamics.com/injector-selector/

Cool calculator at 7500rpm ID1050x would roughly be 75%DC vs 85% with boost reference vs not at 12psi

You can take it one step further too if you find yourself on the edge of running out of injector. Bump the base fuel pressure to 60-65, and boost reference. It can get you that tiny little bit of margin if you're approaching 90% duty cycle or so. But as you raise the base, you may lose idle quality on some lower quality injectors.

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[Bnewell101]

So here’s how my vacuum lines are run, maybe one of you can spot the problem.

I have a vacuum line running from the pro charger surge valve to a vacuum manifold which main runs go to the driver side vacuum port and brake booster.
All other vacuum ports are blocked and my IMRC port is open to atmosphere.
I ran a vacuum line from my fuel pressure regulator to the manifold and I got proper pressure drop.

So assuming vacuum leak would come from the open IMRC, I wouldn’t really want to just cap it.