A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

weired problem!!!!!!!!!!!!!!

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Old Sep 7, 2006 | 06:42 PM
  #1  
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Default weired problem!!!!!!!!!!!!!!

my boost is going up and down when i hit full throttle..
its not holding certain PSI and the boost is going up and down quickly..
if its not full throttle its fine
only at full throttle..
help~~
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Old Sep 7, 2006 | 06:49 PM
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DV
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Old Sep 7, 2006 | 06:54 PM
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its not DV...
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Old Sep 7, 2006 | 07:23 PM
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Wastegate is toast. Its go time for BT!
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Old Sep 8, 2006 | 03:46 AM
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DV!
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Old Sep 8, 2006 | 05:56 AM
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Default Before we call the wastegate toast.. it could be your N75 valve, which controls the wastegate

I am having the same problem with my T28 setup.. roll onto boost its ok... give the turbo a shock of WOT and it can't hold a solid boost number.

Look into the N75 being bad first...

Cheers,
Joel
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