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996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Increase in boost

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Old Apr 14, 2009 | 09:29 PM
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Increase in boost
My X50 just started boosting at up to 1.3 bar... no S/W changes. It runs great until the boost hits 1.3 and then it backs off.

Any ideas?
 
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Old Apr 14, 2009 | 09:44 PM
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Check wastegates to see if they are stuck. Get the codes read....be careful driving with this...
 
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Old Apr 14, 2009 | 11:06 PM
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You are definitely hitting throttle shutdown. Get it checked before you need a new engine.
 
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Old Apr 15, 2009 | 09:58 PM
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Turned out the 2 inch rubber hose between the Y pipe and the boost control solenoid was broken. I just had the alternator changed and the Y pipe was removed a couple of times. Must have weakened the hose by taking it on and off.

Fortunately, a cheap fix this time...
 
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