04.5-05 LLY Performance Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines Related To Performance And Longevity

blow off valve

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  #11  
Old 12-04-2008, 05:54 PM
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no its not doing that. i just wanted one cuz they sound cool but thankyou for your information
 
  #12  
Old 12-04-2008, 05:59 PM
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  #13  
Old 12-04-2008, 06:33 PM
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If you have the savy you can fab up one of your own design.
Use a pressure valve that is of the pilot actuated type, which means it takes a pressure signal to operate it.
Then use a pressure solenoid valve plumbed between your intake (which has the high boost under load) and use it thru a switch on your APPS signal to trigger it. (as you let off the throttle and the boost is high)
This effectively dumps the high boost pressure off the turbo and intake as the load is dropped off as well. I figure you can make one for around $100 total.
The outlet of the regulator valve is open to atmosphere and with the right size and shape outlet tube, it could start to sound pretty cool.

 
  #14  
Old 12-04-2008, 06:36 PM
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i might have to do that! and its lot cheaper/. where would i get the pressure solenoid valve? will it send any codes
 
  #15  
Old 12-04-2008, 06:56 PM
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You have a variable vein turbo (VVT) , it's kind of redundant. You will only make 21-23psi and the computer will not allow you to go any further. It is totally different than a wastegated turbo system. Now if you use EFI Live to boost your turbo to...say 35 psi and have a blow off valve set at 30, you might achieve that 'cool' factor you want, but... nevermind.
 
  #16  
Old 12-04-2008, 07:09 PM
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i was just curious. im not worried about it. i have better things to spend my money on anywayz like geting my transmission built.
 
  #17  
Old 12-04-2008, 07:11 PM
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yeah i would go with the tranny, although it does sound pretty cool it wont help ya if your tranny slip when mash the skinny pedal...
 
  #18  
Old 12-04-2008, 07:16 PM
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ya its limped right now. im meeting with my buddy this weekend to erase it.
 
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Old 12-04-2008, 07:18 PM
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never good when anything ya own is limped and have to have a friend help
 
  #20  
Old 12-04-2008, 07:22 PM
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he is the one that did the tune so he has to hook up his labtop and do his thing.
 


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