TIP connections

[Sl1ced]

So today while doing work I had a look at what’s actually connected to my TIP

Dv
Catch can via puck
N75
Then I have two vac lines, one literally goes straight to the inlet mani. The other comes of the n75 to the bottom of the TIP.

What is the one off the inlet mani? And why does the n75 have another hose going to the TIP?

Tryingto simplify


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[Thai-wronghorse]

On the N75 one vac line goes to the turbo actuator and other ones goes to inlet manifold.
The second vac line from the inlet manifold goes to the fuel pressure regulator on the end of the fuel rail.

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[Connor H]

On the N75 one vac line goes to the turbo actuator and other ones goes to inlet manifold.
The second vac line from the inlet manifold goes to the fuel pressure regulator on the end of the fuel rail.

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My N75's boost source is from the hot intercooler piping. Sure it has to be from a source that doesnt see vacuum and positive pressure.

also @Sl1ced You should have a vac line from the TIP to a hardline on the fuel rail, think it leads to the Evap?