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3rd way to instal mbc?

Old Sep 14, 2007 | 03:19 AM
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From: Leb
3rd way to instal mbc?

i have been cheking how to install mbc and found two ways here.
am interested in this setting:
from mbc to wastegate and other line from mbc to t-fiiting bt bov and intake manifold.
i dont have bov, can i still use same setup.

another thing i noticed that the other setting is from mbc to turbo nip. and a line from mbc to wastegate.

i also saw a third setup where they use only one line to the mbc and the other tip of the mbc is kept free where air goes out. has anyone saw this setup bec i want to know the line coming to mbc from where it is coming??
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Old Sep 14, 2007 | 03:39 AM
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From: Dirty Jerz
use the 1st one....and yes you have a BOV....its just called a DV(diverter valve)...same difference though.
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Old Sep 14, 2007 | 03:40 AM
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From: Leb
do u know by any chance the 3rd way or heard about it?
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Old Sep 14, 2007 | 03:46 AM
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From: Army BCT
the only other way I think you could be talking about would be an EBC(electronic boost controller) being hooked directly to the boost solenoid. I have never seen how they are hooked up though, maybe someone else with one could elaborate.
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Old Sep 14, 2007 | 03:55 AM
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From: Leb
as i remember no solenoid in involved.
i remember there is a line to the tip of the turbo hooked by a t-fitting to something i dont remember, and then to the mbc tip!
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Old Sep 14, 2007 | 04:36 AM
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From: Clifton NJ
The "Third Way" is called bleed off, From factory many of cars come with the bleed off style. There is a hose connected from the Waste Gate actuator to the boost source, in that hose there is a T with another hose coming off of it. The other end of that hose connects to NC side of a solenoid or boost controller, then the boost control device simply bleeds air out of the line to maintain a desired air pressure in it. Therefore controlling the actuation of the waste gate actuator. Only problem is with a manual boost controller the boost control won't work, you would have to use some electronic controller with a map sensor.

Last edited by 3SgteGuru; Sep 14, 2007 at 04:39 AM.
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Old Sep 14, 2007 | 05:07 AM
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From: Leb
a friend of mine has this setting i will check it today!
but i beleive the first setup i talked about is the best!
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Old Sep 14, 2007 | 07:19 AM
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You should use the turbo nipple as the source, thats the best way.
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Old Sep 14, 2007 | 07:55 AM
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From: Chelsea, AL
+1

Sourcing boost from the charge pipe is the most reliable method.
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Old Sep 14, 2007 | 08:28 AM
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From: Chelsea, AL
Originally Posted by ranz
i also saw a third setup where they use only one line to the mbc and the other tip of the mbc is kept free where air goes out. has anyone saw this setup bec i want to know the line coming to mbc from where it is coming??
This is simply not possible the way you describe it. Any boost controller, be it ball and spring or vent, must have at least 2 connections ... one pressure source line and one line to the wastegate.
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Old Sep 14, 2007 | 08:33 AM
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From: Flat Rock, NC
Originally Posted by dan628
You should use the turbo nipple as the source, thats the best way.
i have it this way works perfectly a pain to get your hand there though to get the vacum hose installed
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Old Sep 14, 2007 | 11:35 PM
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From: Leb
in other threads they were advising not to use turbo nipple and they listed the disadvantages of that!
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Old Sep 15, 2007 | 06:07 AM
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From: Chelsea, AL
Sourcing from the BOV line can cause BOV flutter at partial throttle and spikes in your boost curve. Sourcing from the charge pipe is a little slower to respond but is much more stable. The only problem is that aftermarket LICPs don't have the nipple to source from.

The stock solenoid used the charge pipe for the source and the Greddy Profec Bs I've installed recommended it as well.
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Old Sep 16, 2007 | 02:16 PM
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From: Leb
i read that from bov, boost will be more stable than turbo nip!!
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Old Sep 16, 2007 | 02:24 PM
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From: Atl/Southeast
Correct! Dude you've
read wrong ask any of the big tuners here and they will tell you the same thing a TouringBubble

Originally Posted by TouringBubble
Sourcing from the BOV line can cause BOV flutter at partial throttle and spikes in your boost curve. Sourcing from the charge pipe is a little slower to respond but is much more stable. The only problem is that aftermarket LICPs don't have the nipple to source from.

The stock solenoid used the charge pipe for the source and the Greddy Profec Bs I've installed recommended it as well.
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