I have an idea, but they might not be vacuum lines im asuming their going to the switching solinoid but for what? correct? ? not too sure but but i think the third one is for the double throttle control which (no one really has)?

wondering if I could use it as a vacuum(pressure line) for my 3bar MAP sensor.

If the diagrams posted are correct it's a switch solinoid(2) 1fuel pressure the other duel actuator for throttle if not welll Yikes im confused.

One's being re-routed with the other to close the line the others got a screw in it.
4x the fouth hardline goes to the fuel pressure regulator

This picture is of a JDM Jspec S5 1990 RHD, *mine*, This is located right behind the TPS throttle dls. or.... Back side of the engine on intake manifold after throttlebody hardlines riding block.
These are beneith the air bleeds on the manifold*







From what I can understand with differnt diagram it's backwards (Charge, turbo, FPR, double throttle)

 

Still cannot find out what these are for. not in manual I was told it could be from emmision removal two are for the canistar, one for the fuel pressure regulator, and the 4th?







Trying to take a new pressure line for my MAP sensor or use it for my boost controller.

Not sure if these lines do or provide. Red go into one another the black has the screw in it and the last red goes into the FPR.