Hey, I am installing a Greddy profec B and just want to check opinions on slightly varying info between the excellent z32 wiki, manual and other online info. Wiki diagram runs the vacuum hose from NO on the valve unit to the solid intake pipe going to the throttle body after the intercooler, the manual shows it connecting to the hose at the other side between turbo and intercooler, surely there is more pressure after the intercooler, which is correct or am I overthinking it?

Secondly Wiki suggests the vacuum line on the passenger side can be blocked up, other online info suggests to T into NO from both sides, I can see advantages to this in its giving a balanced reading between both turbos and so if fault/ leak on one side it will show in the figures...

Thoughts appreciated thanks.

 

 

For my HKS EVC4 install the setup. BC Solenoid mounted so roughly equal distance for hose runs between both wastegate actuators

and between TB intake takeoffs (small blue hoses T'd off from soleniod running to both wastegate actuators and both intake takeoffs).

This setup has been in service for over 15 years without any issues.

This is for RH TB takeoff using existing nipple in intake pipe. Large diameter blue hose runs up to TB.  LH side is the same setup.

Single takeoff from balance bar for boost pressure signal to BC Soleniod.

Edited June 27, 20223 yr by AndrewG

Ting into both sides seems wise, thanks for the confirmation