How to hookup external wastegate?

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Old Feb 23, 2013 | 08:59 AM
  #1  
Key Enzyme's Avatar
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Default How to hookup external wastegate?

Im trying to figure out what goes where but it seems everyone has their own opinion. I have never done a turbo setup so this is probably going to be the hardest part , finding out where to hook everything up.
The wastegate has two holes, one at the top and one on the side. I will be using the cheap little manual boost controller in the picture.
I found a diagram online could i do it like that? The only problem is my turbo doesnt have a hole for a hose so could i connect it to my vacuum manifold intead?


http://s1354.beta.photobucket.com/us...tml?sort=3&o=3

http://s1354.beta.photobucket.com/us...tml?sort=3&o=4

http://s1354.beta.photobucket.com/us...tml?sort=3&o=2

http://s1354.beta.photobucket.com/us...tml?sort=3&o=0

http://s1354.beta.photobucket.com/us...tml?sort=3&o=1

http://s1354.beta.photobucket.com/us...tml?sort=3&o=5
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Old Feb 23, 2013 | 09:13 AM
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Default Re: How to hookup external wastegate?

The bottom port can hooked up to vaccum manifold that's how I have it
And yes the top port is to control pressure

Off topic
That exhaust manifold is known of cracking near wastegate
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Old Feb 23, 2013 | 12:01 PM
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OneBadTurboCRV
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Default Re: How to hookup external wastegate?

Waste of plumbing to do it that way. Just hook up in between the compressor and throttle body. Most wastegates are NOT designed to see vacuum on the diaphragm. People love to say it doesn't matter but it will in fact cause issues eventually. There is a reason the leading manufactures specifically say to NOT hook it up to a vacuum source. If you need to just tap and drill the compressor housing. Its not a big deal at all.

The top port is merely the vent. If you restrict this vent or add pressure you can essentially create a dynamic spring pressure. This adds to the pressure that the compressor has to add under the diaphragm to overcome and open the valve/gate.

Compressor Housing --> Manual Boost Controller (MBC) --> Wastegate bottom port
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Old Feb 23, 2013 | 02:47 PM
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Default Re: How to hookup external wastegate?

The compressor housing is in vacuum at part throttle as well dur.
And I’d like to hear your explanation of how the top port is used in an EBC configuration if you can’t add pressure or restrict this vent.
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Old Feb 23, 2013 | 03:11 PM
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Default Re: How to hookup external wastegate?

mine is a welded on fitting on the hot side intercooler pipe. but I may just run it to the compressor housing. either way its pressurized and prob makes no difference
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Old Feb 23, 2013 | 03:14 PM
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OneBadTurboCRV
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Default Re: How to hookup external wastegate?

Originally Posted by Muckman
The compressor housing is in vacuum at part throttle as well dur.
And I’d like to hear your explanation of how the top port is used in an EBC configuration if you can’t add pressure or restrict this vent.
So you are saying that the compressor housing sees 20"+ of vacuum in part throttle? I am going to have to measure this. Also, if you actually READ the second and third sentences in my second paragraph you will see how stupid your second comment/sentence is dur. Sometimes instead of being a smartass it helps to actually read before showing ignorance.
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Old Feb 23, 2013 | 06:10 PM
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Default Re: How to hookup external wastegate?

oh snap he told you
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Old Feb 23, 2013 | 08:17 PM
  #8  
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Default Re: How to hookup external wastegate?

1badcrv
I have mine off the vaccum block I have no issues. To much plumbing? Maybe but when air is moving, it's moving. My tuner told me that's it's better to get the pressure from the intake manifold rather than the compressor housing. I'm with muckman on this.

OP if you need a picture of how I have it routed just say so and ill post it
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Old Feb 23, 2013 | 08:34 PM
  #9  
Key Enzyme's Avatar
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Default Re: How to hookup external wastegate?

calm down fellas! lol. So anyways the top port can go to the MBC and the side port to my vacuum manifold? And then the second port on the MBC to the vacuum mnifold as well?
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Old Feb 23, 2013 | 08:35 PM
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Default Re: How to hookup external wastegate?

http://www.atpturbo.com/mm5/merchant..._Code=ATP-FTG1
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Old Feb 23, 2013 | 08:36 PM
  #11  
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Default Re: How to hookup external wastegate?

Works perfect I use it on my gt series
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Old Feb 23, 2013 | 08:49 PM
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OneBadTurboCRV
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Default Re: How to hookup external wastegate?

The only reason to reference the manifold is to get a "true" boost reading. This eliminates losses through piping/Intercooler and such. All of that can be accounted for with increasing the boost (same thing you are doing unknowingly anyways). Nobody said it couldn't be done when using the top and bottom ports, but to me it is pointless depending on end goals.

You can run a EBC and MBC only to the bottom port. You can run them to the top and bottom port as well. You obviously have more of a range to control with top and bottom vs just bottom.

If you are stuck on using both ports then that is simple OP.

BOTTOM PORT:
Boost Reference Location --> Bottom Port

TOP PORT:
Boost Reference Location --> MBC/EBC --> Top Port

It is really that simple. You are just over complicating it and having to source more lines being that you still have to run a BOV. To each his own I guess.

I just looked at your links... you posted TURBOSMARTs diagram and you are asking this question? Why not follow their instructions which are hmmm strikingly similar to what I said...
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Old Feb 24, 2013 | 06:25 PM
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Default Re: How to hookup external wastegate?

i went off compressor hosing to top port on wg, no spike, held 8 psi all the way
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