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wastegate and bov hookup

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Old 06-25-2012, 05:39 PM
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Originally Posted by 02'Z71ONDUBZ'
I would reference it to the manifold. That way the gate will open via the actual pressure seen in the intake, rather than at the compressor housing. Pressure at the intake is what matters.
At part throttle, this can cause the turbo to spool up when you don't want it. i.e.: slowly letting off the throttle while in boost will cause the turbo to try and blow the throttle blade open to keep up the manifold pressure.
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Old 06-25-2012, 06:28 PM
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Originally Posted by Ferocity02
If you hook it to the cold piping before the TB or to the compressor exit it won't see vacuum but will see boost, I think that's what he's saying.
Originally Posted by nonnieselman
Only vacuum is behind the Throttle body.
So with the WG connected to the compressor outlet, it shouldnt see vacuum. Well maybe just a little while its lagging, or till it starts building boost.
Originally Posted by 02'Z71ONDUBZ'
The only vaccum at the turbo should be between the filter and inlet
When you are flat road crusing at light throttle... Is that not technically in vaccum? Cause you arent in boost at like 15% throttle and 15% engine load????
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Old 06-25-2012, 06:41 PM
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I have a gauge for that
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Originally Posted by FrostKing
At part throttle, this can cause the turbo to spool up when you don't want it. i.e.: slowly letting off the throttle while in boost will cause the turbo to try and blow the throttle blade open to keep up the manifold pressure.
the turbo is driven from the turbine side, not sucked through the compressor side.
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Old 06-25-2012, 06:46 PM
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Originally Posted by black00chev
When you are flat road crusing at light throttle... Is that not technically in vaccum? Cause you arent in boost at like 15% throttle and 15% engine load????
The intake would be in vacuum. But everything before the TB such as the cold pipes, intercooler, and compressor exit would be at ambient pressure, or close enough to it..
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Old 06-25-2012, 07:03 PM
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ok never mind then. I know how a turbo works but Ive clearly lost my idea and point lol.
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Old 06-25-2012, 09:06 PM
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so where is this nipple on the passenger side i see what looks like it could be one if i broke the tip off its about mid way on the passenger side but thats about it?
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Old 06-25-2012, 10:54 PM
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this is the only place I see to connect the vacuum line too, but I dont see how the cover or whatever is pluggin the hole comes off?
Name: 0907tr_16_z2008_chevy_silverado_procharger_supercharger_installationvacuum_hose.jpg Views: 271 Size: 59.5 KB
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Old 06-25-2012, 11:24 PM
  #38  
I have a gauge for that
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Mine is sealed right there...you would have to drill out a hole if you want to use that. I use the brake boost fitting on the back since I have hydroboost.
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Old 06-26-2012, 09:35 AM
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I got rid of the evap crap on my truck and used that hole, just tapped for 1/4 npt
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Old 06-26-2012, 10:16 AM
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You can tee into the brake booster line, that's what I did on the Z28 when it was procharged.
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