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Boost Problems w/ Custom Tunes

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Old Jul 20, 2009 | 07:36 AM
  #1  
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Boost Problems w/ Custom Tunes

This issue is getting progressivly worse. Running custom tunes (both Eric's and Matt's). If I "get into it" - even a little bit to pass - boost comes up fine to about 25 psi and all is well until I let off fuel. Boost then drops to zero and will not come up past 5. You can hear it in the engine as I get a low droning sound. If I try to accelerate I get all kinds of black smoke, no power and boost stays down. Only option is to drive for a few seconds (ususally less than a min) and boost will come up to normal, engine noise is normal and all is well until the next time. THIS DOES NOT SEEM TO HAPPEN WITH "STOCK" TUNE (although as we all know it is hard to get boost up around 25-30 with stock). Any ideas?
 
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Old Jul 20, 2009 | 11:28 AM
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KRDiesel
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From: Farmington NM
Sounds like the vanes are sticking, There may be a spot that sticks only if they are moved past where the stock tune will move them to.
 
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Old Jul 20, 2009 | 12:12 PM
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That's kinda what I was afraid of KR. I suppose that is an expensive fix?

Thanks for the reply
 
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Old Jul 20, 2009 | 12:40 PM
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Nope, Just time consuming. In the tech folder there are directions on how to clean the turbo
 
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Old Jul 20, 2009 | 12:52 PM
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From: Farmington NM
http://cid-5366fff6538efcfe.skydrive...7C120turbo.pdf

here you go
 
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Old Jul 21, 2009 | 07:49 AM
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Thanks much
 
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