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sudden overboost issue.

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Old Apr 10, 2010 | 11:04 PM
  #1  
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From: Bonney lake Washington
sudden overboost issue.

Alright guys I don't post to often with questions, but I couldn't find anything when I searched. I was driving my car the other night boosting 12lbs like I always do (controlled by MBC) all night long. The next morning on my way to work after I got up to temp, and I decided to do a couple pulls and instantly my boost shoot up to 14.7psi and hit the cut because I only have a 1bar map sensor. Its not boost creep because I have felt that before and its not like this. I just don't know what could have happened overnight to magically change my boost. Any ideas on this issue would be greatly appreciated.
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Old Apr 10, 2010 | 11:11 PM
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From: BC Canada
What was the air temp in the morning?

Mike
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Old Apr 10, 2010 | 11:40 PM
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From: Bonney lake Washington
air temp was around 14-16 degrees Celsius.
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Old Apr 11, 2010 | 12:01 AM
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have you even checked the controller? A blown off hose will cause this.
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Old Apr 11, 2010 | 01:17 AM
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Yes I checked the controller and both the hoses were still intact.
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Old Apr 11, 2010 | 02:36 AM
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you may have already done this but check that there are no rip/tears in the lines and make sure that they are secured on both ends (from turbo and to wastegate)
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Old Apr 11, 2010 | 12:52 PM
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From: BC Canada
also check the line off of the back of the wastegate,(it is on the side near the engine) if that line (or cap) comes off it will cause the same issues

Mike
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