SS Specific Service Issues/Repairs Service/Repairs specific to the SS. Turbo-Brembo Brakes-2.0 Engine-Limited Slip Differential-Programmable Display-MU3 Transmission

Can't figure out no boost preasure

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Old Feb 21, 2026 | 04:09 PM
  #1  
Laguna's Avatar
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Joined: 02-21-2026
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Can't figure out no boost preasure

About 2 months ago I replaced the turbo because the fins stopped working and it was leaking oil and running really bad so I replaced it one from eBay I shouldn't have but it didn't have a lot of money I paid I think $160 for it with shipping so of course I know you get what you pay for and I put it on and it lasted pretty much about a month and a half and for the last two weeks I have taken the turbo off change the wastegate i have changed the Boost valve solenoid piece by the turbo housing there's no vacuum leak the car runs great it's just when I give it gas and try to rev up it'll go to zero pounds and that's it but the car runs as smooth as silk it is a 2009 sS with around 2 if anybody has any solution or tips and tricks because I have rattled my brain i tried bypassing solenoids i have vacuum the only thing I don't have is any boost whatsoever and there is not a check engine light
Old Feb 22, 2026 | 07:21 AM
  #2  
Oldblue's Avatar
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From: Welland,Ont Canada
Seems to me the cheap turbo is the most likely culprit!
Old Feb 22, 2026 | 08:33 AM
  #3  
donbrew's Avatar
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Do you mean there is some boost at idle then drops to zero when you stomp on it?
Did you check the intercooler ducting for leaks?
Old Feb 22, 2026 | 05:11 PM
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Laguna's Avatar
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Originally Posted by Oldblue
Seems to me the cheap turbo is the most likely culprit!
You might be right
Old Feb 22, 2026 | 05:13 PM
  #5  
Laguna's Avatar
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Originally Posted by donbrew
Do you mean there is some boost at idle then drops to zero when you stomp on it?
Did you check the intercooler ducting for leaks?
I've checked everything and no leaks, when at idle I have 20 vacuum on the gauge and I stomp it goes to 0 and that's it, I can hear the turbo spooiling up but no power
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