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Old 08-08-2017, 04:44 AM
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Default vacuum manifold

Can I use this that is capped off during my install of Procharger as a "feed" for my manifold I am going to use for my Meth boost reference, boost gauge and ati race valve?

If not where can I do that would feed my block? I have seen lots pointing to random spots including brake booster line however i would think i would need a check valve before booster??

Any help would be greatly appreciated.


Old 08-08-2017, 08:25 AM
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You can use that port and there is a small nipple on the brake booster port in the back of the intake manifold that faces the pass side of the car. You can plumb all of it together if you like.
Old 08-08-2017, 08:29 AM
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Does that TB port go to the outside of the throttle blade?

That means it will not see vacuum, only boost.
Old 08-08-2017, 08:47 AM
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Originally Posted by conan
You can use that port and there is a small nipple on the brake booster port in the back of the intake manifold that faces the pass side of the car. You can plumb all of it together if you like.
Can you possibly post a pic of this nipple? This is on a 2002 WS6 so i am no sure where it is.
Old 08-08-2017, 08:48 AM
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Originally Posted by JoeNova
Does that TB port go to the outside of the throttle blade?

That means it will not see vacuum, only boost.
All i know is its the port from the Passenger valve cover.
Old 08-08-2017, 09:12 AM
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Joe is right. That's the "clean air" side of the pcv system. No vacuum present there.
Old 08-08-2017, 11:32 AM
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Sorry it been a while since I had the throttle body torn apart, like these guys said if its in front of the throttle blade its boost only.

Here is the port in the back of the intake that feeds the HVAC you can pull vacuum from this and plumb the HVAC into your manifold block.




Are you running a PCV system ? Are you keeping the EVAP ?
Old 08-09-2017, 02:47 AM
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Yes I am running a PCV system. (Ordered a Mighty Mouse Catch Can per recommendations)

EVAP? I am assuming is still on the car and will remain. I have removed the smog system when I did LT install (and tuned codes out) I am using stock fuel system with pump and hotwire upgrade.



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