7afte, vacuum diagrams Options

[tigernate29]

Can any of you 7afte guys tell me where I need to run my vacuum lines. I currently have "T" fittings connecting my turbo and wastegate actuator to the BOV, FMU, and boost gauge. The problem is that I can feel the turbo kick in and I know it is making boost, but my gauge isn't reading any boost. Is there possibly a leak in the system or do I just have the vacuum lines crossed somewhere?

[nik]

post some pics of your step up. I just T off the back side of the intake manifold for my BOV and guage then T the passanger side of the intake manifold for the FMU.
My boost controller is just connected to the inlet of the turbo and the wastegate in short i have three seperate connections. i'll post a few pics tomorrow.
also are you running an internal or external wastegate?

This post has been edited by nik: Oct 27, 2004 - 1:45 PM

[97sccelica]

you have it all wrong

the wastegate actuator is supposed to be connected to the turbo, like you see in many pictures

the BOV, boost gauge, and FMU however, must be connected to vacuum ports BEHIND the throttle body, otherwise they will not work.

[nik]

thats what i was trying to explain 97sccelica took the direct approach and hit the nail on the head

[tigernate29]

Okay, thanks fellas. I'll go get it right this minute. Thanks again both of you.

[tigernate29]

Alright guys new problem now. I changed all of the vacuum lines around like you said. They work, but the problem now is that when my car is under boost (and I can feel it boosting) the most the boost gauge reads is 0 p.s.i. At idle it is reading about 10-20 psi vacuum, but I can never get it to go above 0 boost. To give you more of an idea of my setup I have a T3/T4 B hybrid with internal wastegate, FMIC, 2 1/4 intercooler pipes and exhaust, 12:1 FMU. The A/F ration on my gauge reads that it is running just about perfect during acceleration if not just a little rich. My question is do you have a picture of where you "T"'d into the vacuum lines so I can sort of copy that and make it run right? Also, my acceleration is a little jerky so I feel like this has to do with the vacuum lines too. I did put a check valve on it too and I may be having trouble getting it set right. I just kind of wanted to get your opinions in this matter. Sorry about the long post, and any help will be appreciated. Thanks guys.