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Question about a boost/vacuum gauge

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Old Dec 11, 2009 | 07:48 PM
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Default Question about a boost/vacuum gauge

I'm looking at ordering the rest of my gauges pretty soon, and I don't want to have an open section in the gauge pod, and down the road I'm going to be turboing, or supercharging the motor.

My question is, when I hook up the vac/boost gauge, can I hook up just the vacuum part? and leave the boost section unhooked until I add boost?

Does anyone follow what I'm asking? =\
 
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Old Dec 11, 2009 | 09:20 PM
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Lol, oh Eric.

Anyways... sooo, if I hook it up right now, it'll still work? It won't be just a dead gauge?
 
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Old Dec 12, 2009 | 11:13 PM
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yes. vaccum works in "opposite" of boost. Dont have to have FI to have a vaccum gauge, it will still work.
 
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Old Dec 13, 2009 | 12:20 AM
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but then when I add boost, it'll read both ways, correct?

instead of just in vacuum?
 
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Old Dec 13, 2009 | 09:57 AM
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You are correct. Without a SC/Turbo the gauge will just show vacuum. With the SC/Turbo the gauge will read both vacuum and boost (aka on the go fast pedal you get boost, foot off the go fast pedal it will register vacuum).

(*sigh* To have boost again.)
 

Last edited by spshultz; Dec 13, 2009 at 10:01 AM.
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Old Dec 13, 2009 | 10:08 PM
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Cooorrrrect!
 
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Old Dec 13, 2009 | 10:44 PM
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ok, someone told me that when adding the boost gauge, if I tap into a vacuum line, I have to worry about my air conditioning turning to defrost and my brakes not working, any of this make sense?
 
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Old Dec 14, 2009 | 02:29 AM
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Frenchy, once you hook up the gauge you will know instantly if you have a leak or not. When I pulled my blower to repair the pulley, I still drove my truck and the boost gauge worked just fine even without the blower installed. All it does is monitor the pressure in the line.

Boost is a trip, if you go with boost you will love it.
 
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Old Dec 14, 2009 | 08:42 AM
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ok, someone told me that when adding the boost gauge, if I tap into a vacuum line, I have to worry about my air conditioning turning to defrost and my brakes not working, any of this make sense?
I think you'd really have to install the gauge and line pretty badly for that to happen, if at all. Honestly though it's really easy and I think you'll be fine. Just tap into a normal vacuum line with a T.

On my Eclipse I used barbed fittings and small zip ties at every connection point to make absolutely sure those vacuum hoses would stay on. Never had a problem with them.
 
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