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

Someone Please Help!!!!!!!!!!!!

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Old Apr 25, 2003 | 01:54 PM
  #1  
dankg's Avatar
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Default Someone Please Help!!!!!!!!!!!!

Hello. I have been having a little trouble with my 98 audi a4's turbo. I had a Wett. chip installed and since then, my turbo periodically turns down. The boost normally is around 10-14 psi, but when this happens it turns down to 4 or 5 psi. It does it almost everytime I drive, but it goes back and forth. If anyone has any info. on this please let me know.
Thanks.
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Old Apr 25, 2003 | 01:59 PM
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try oxy sensor before the cat ot the bypass valve
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Old Apr 25, 2003 | 02:02 PM
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Default Re: try oxy sensor before the cat ot the bypass valve

thanks, i'll try those.
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Old Apr 25, 2003 | 02:06 PM
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Default did it throw a code

u might want to vag it before u spend the $130 on the sensor and the BPV
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Old Apr 25, 2003 | 02:09 PM
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Default Re: did it throw a code

I recently had it in the shop for a check engine light. they checked the codes and never said anything about it. I will check again though.
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Old Apr 25, 2003 | 02:12 PM
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Default get the code number and post it here,

someone can better point You in the right direction

BTW I have the Bently manual that tells you what to look for with each code as well as a vag-com, well worht the $300 IMO
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Old Apr 25, 2003 | 02:13 PM
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Hmm....Wett? Hmm....Wett?
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