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  #1  
Old 06-02-2017, 06:26 PM
Cgingrich Cgingrich is offline
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Wastegate stuck open possibility? Or something up with the boost controller?
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  #2  
Old 06-06-2017, 07:22 AM
v8volvo v8volvo is offline
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Nice looking setup. However we can't tell you much from the pictures unless you do some checks and get answers.

I suggest you start by plugging your boost gauge in somewhere ahead of the intercooler, best way may be to tap into the line running from the compressor housing to the wastegate. Take it for a drive and see if you are seeing the same boost response as you saw in the intake manifold.

If you see no change, then you'll need to check the wastegate and boost controller for correct configuration or other issues, and check again for possible restrictions in the air inlet to the turbo, the exhaust, or the fuel system.

If you do see different pressures from this test, then it means you have a restriction in the intake path between the turbo and the intake manifold, probably in the intercooler, the intake manifold inlet, or one of the hose connections.

We'll be able to help you more once you have concrete answers to these questions, until then, we can only speculate.
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  #3  
Old 06-06-2017, 03:10 PM
anders anders is offline
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Is there still black smoke present when you have 10lbs of boost?
What is the EGT?

Are you going to try the .48 AR turbine housing or stick with that large turbine housing?
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Last edited by anders; 06-06-2017 at 03:12 PM.
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  #4  
Old 06-06-2017, 03:56 PM
adamdrives adamdrives is offline
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This is basic, but main fuel adjustment can have a huge influence boost behaviors. I won't pretend to fully understand why, just observed this from adjusting my pump over time. Have you played with the main fuel? From your specs it seems like you are familiar with the setup, but you didn't mention. Even a quarter turn can mean building 10 psi and bottoming out or building 20 quickly.

Backing out star screw (LDA, top of pump) really helped me with low rpm/boost smoke, at with noticeable change to overall power. No matter what power you're making, having that adjusted in fully will make clouds of thick black smoke with no real benefit in my experience.
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