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dump valve makes a funny sound off boost !

Discussion in 'A3/S3 Forum (8L Chassis)' started by jonno123, Feb 22, 2013.

  1. jonno123

    jonno123 Member

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  3. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    You have one of these fitted??? what model car? get a proper recirculating DV fitted... BOVs aren't suitable for VAGs on std management...

    <tuffty/>
     
  4. jonno123

    jonno123 Member

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    audi a3 1.8t 20v agu 8l k03 turbo 2001 on a emerald k6 after market ecu

    John
     
  5. jonno123

    jonno123 Member

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    it makes a sort of humming sounds some times drives me crazy
     
  6. Eddie S3

    Eddie S3 Member

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  7. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow...
    Staff Member Moderator Audi S3

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    Ahhh... k... difficult one... bov's etc make noises if there isn't a enough vacuum typically... couldn't say if the 'vibrating' is normal as this is not the sort of valve thats normally fitted to these engines but have you serviced the valve at all recently? most Forge valves need a service with new grease and o-rings every 12 months or so....

    Beyond that its difficult to say as your build is not std and therefore could be anything... maybe worth starting a build thread if you have enough pics etc so that we can all see what you have done... too many unknowns including the valve...

    Have fitted a similar dual piston one onto a big turbo Mk2 Golf build before but that works fine... not come across a vibration before.. is entirely possible its leaking... if it does it off boost then it could be drawing in air under vacuum... maybe get a smoke test...

    <tuffty
     
  8. jonno123

    jonno123 Member

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