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Boost!! Up and down ??

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Old Jun 12, 2012 | 06:40 PM
  #1  
Black_beast's Avatar
Black_beast
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From: Somerset
Default Boost!! Up and down ??

Just watched the gauge while on boost hits a bar and drops slightly and then back to a bar,,and keeps like this? Why? I have no check engine light on while on boost?
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Old Jun 12, 2012 | 09:45 PM
  #2  
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what dump valve have you got?

sounds like you have a boost leak
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Old Jun 12, 2012 | 11:53 PM
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From: Stirling
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I get this a bit too. Someone told me it could be the neutral position switch faulty. As when the car thinks its in neutral, it drops the boost down. Don't know if it's true or not?..
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