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unsure of vaccum lines

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Old Jul 8, 2013 | 06:40 AM
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Default unsure of vaccum lines

so ive looked everywhere and just need a lil conformation of my wg bov and boost solenoid routing

what im planning to do is run my upper vacuum line thats removed from the mass airflow to the bov and "T" the lower vaccum line to the bottom of the waste gate and the boost solenoid, then a line from the solenoid to the wastegate top.is this an effective way to run my lines or will i run into problems?
ive searched alot on here and find many ways to runs the lines but non is specific enough to answer my question.

also do i comletely remove the mass air flow sensor and use the 12v and neg for the boost solenoid?
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Old Jul 8, 2013 | 06:51 AM
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Our cars use a speed density sensor (MAP), not a mass air flow sensor (MAF). Or are you referring to the MAC solenoid? The pressure/vac source for the BOV needs to be on the intake manifold side of the throttle body.
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Old Jul 8, 2013 | 08:04 AM
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Originally Posted by herecomesboost
Our cars use a speed density sensor (MAP), not a mass air flow sensor (MAF). Or are you referring to the MAC solenoid? The pressure/vac source for the BOV needs to be on the intake manifold side of the throttle body.
no not the map sensor on top of the throttle body, the sensor that has 2 vac lines connected that is connected to the stock air intake box or if you run NA intake the sensor that connects to the intake pipe. and yes i am referring to a mac boost solenoid
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Old Jul 8, 2013 | 08:29 AM
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The part circled in red in the following pic?


Are you not deleting the air pump/solenoid/lines? The aforementioned part (that you're wishing to use a vac/boost reference) is the air pump solenoid. Not sure of the effects of pressurizing the air pump. Personally, I would delete the air pump (and ancillary parts) and simply run a vac line from the intake manifold (there will be a small nipple available toward the firewall subsequent to the removal of the small metal air lines that run parallel with the fuel rail) to the vac port on the bov.

Regarding the lines running to the MAC solenoid:

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Old Jul 8, 2013 | 09:29 AM
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Originally Posted by herecomesboost
The part circled in red in the following pic?


Are you not deleting the air pump/solenoid/lines? The aforementioned part (that you're wishing to use a vac/boost reference) is the air pump solenoid. Not sure of the effects of pressurizing the air pump. Personally, I would delete the air pump (and ancillary parts) and simply run a vac line from the intake manifold (there will be a small nipple available toward the firewall subsequent to the removal of the small metal air lines that run parallel with the fuel rail) to the vac port on the bov.

Regarding the lines running to the MAC solenoid:

yes this is the pump i am referring to, so the upper hose marked -6 in the diagram would go to the bov, no problem there.
the lower hose on the other hand marked -9 in the diagram where does that go? do i just cap it off?
my turbo has no nipple on the compressor, i could tap it, but my friend has his turbo s using that lower hose to his wastegate with a 'T' to the solenoid then to the top of his wastegate
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Old Jul 8, 2013 | 09:42 AM
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Hose 9 has a check valve (#1). If your friend has his hoses routed this way without issue, go for it Why are you keeping the air pump/ancillary parts?
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Old Jul 8, 2013 | 10:36 AM
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Originally Posted by herecomesboost
Hose 9 has a check valve (#1). If your friend has his hoses routed this way without issue, go for it Why are you keeping the air pump/ancillary parts?
im not, the pump will be cut out and the 12v wires that run it will run my boost solenoid.
my original question was if anyone has done it that way or if i might run into trouble routing my vacuum hoses in that manner.
my friend has his this way but it seemed kinda sketchy to me, wasnt sure if it was the best idea.
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Old Jul 8, 2013 | 11:12 AM
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lol Doesn't seem like the ideal setup (both visually and functionally) but if it works, go for it. The 12v wire can be used for the MAC 12v source.
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Old Jul 8, 2013 | 02:35 PM
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Originally Posted by herecomesboost
lol Doesn't seem like the ideal setup (both visually and functionally) but if it works, go for it. The 12v wire can be used for the MAC 12v source.
So I did a little more research and this is not a good idea.the upper vacuum line (#9) with the check valve goes to the air control valve and needs to be blocked off, i can just drill a hole and weld a nut on my first hot side charge pipe and and put a nipple on it, save from tapping the compressor housing. no biggie.
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Old Jul 8, 2013 | 02:46 PM
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You can just pull vacuum from your intake manifold ...

or grab a vacuum block for 20 bucks and run everything from that.
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