vrracing

iTrader: (1)

The FSM vacuum line diagram doesn't seem to match the JDM S5 Tii so I could use some help.

I have 3 vacuum lines that I believe go into the 3 ports on the back of the UIM. The 4-1 from the OMP lines obviously goes into the big port in the middle.

Then the line coming from between the 2 primary fuel injectors and the line coming from the firewall side of the LIM right by the rear secondary fuel injector both need a home. Anyone know which goes to the top port and which goes to the bottom? I've read in other threads that on S4 Tiis this is important.

Thanks in advance.

RotaryRocket88

iTrader: (7)

Top one supplies vacuum to the primary injector bleeds.

Middle one is for the oil injector bleeds (metered air)

Bottom one is for secondary throttle body operation (metered air)

Info found here:
https://www.rx7club.com/showthread.p...vacuum+diagram

HAILERS

It makes a difference where they go. The top nipple is not vacuum. It is metered/filtered air. The bottom one is the Only one with vacuum and goes as stated in the post above, the water thermo valve.

You do not want the bottom one that has vacuum, going to the fuel injector air bleeds. The car will idle *funny*. And you won't be laughing.

vrracing

iTrader: (1)

Thank you, kind sirs. I want to be laughing with joy when we drop this puppy in so your knowledge is most appreciated.