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Dv wrong way round!!

Discussion in 'A3/S3 Forum (8L Chassis)' started by Wilts, Jul 12, 2012.

  1. Wilts
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    Wilts Member

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    [Jul 12, 2012]
    Iv already asked about this b4 but easier to start again, iv seen some people have turned their aftermarket dv round the wrong way why would they do this? I really dont want the whoosh noise so how do i get round this? People on here b4 said if i just blocked pipes it wud fook the turbo.
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  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 12, 2012]
    Just fit a recirculating DV the correct way around and be happy... fitting the wrong way around can cause a boost leak and make the spool a little slower

    Not fitting a DV at all will break your turbo..

    <tuffty/>
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  4. Sam_
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    Sam_ Down under

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    [Jul 12, 2012]
    And it sounds terrible the wrong way around...
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  5. Colly
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    Colly The Tangerine Machine

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    [Jul 12, 2012]
    if you want more noise just fit a jetex cone and a forge DV the right way mine makes more than enough noise
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  6. djarchive
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    djarchive Member

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    [Jul 12, 2012]
    This.
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  7. Wilts
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    Wilts Member

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    [Jul 12, 2012]
    Sorry forgot to say mine is a resirc dv and makes alot of noise but i dont want it, just waste gate chatter id perfer really.
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  8. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 12, 2012]
    As said... fit a recirc DV like the Forge 007p properly and the right way around and thats it... BOVs and atmos valves don't work on these engine/ecu combos and not fitting one at all will lead to turbo failure... the 'wastegate chatter' you seek is a misnomer... its compressor stall... compressor stall is bad for any turbo which is why they fit dump valves to relieve the pressure...

    <tuffty/>
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    Benjiman46 and ChaddyA3 like this.
  9. superkarl
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    superkarl MAN OF STEEL

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    [Jul 12, 2012]
    LOL
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  10. ads1377
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    ads1377 Member

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    [Jul 12, 2012]
    Just confirm what the correct way around it please, should the top nipple face the sky??

    Cheers
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  11. Paradox1
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    Paradox1 Active Member

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    [Jul 12, 2012]
    Yup
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  12. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 12, 2012]
    In the picture below.... bottom outlet goes into the TIP, side outlet goes to boost from the charge pipe and the little one on top is for the vacuum from the N249 or if bypassed direct from the inlet manifold..

    [​IMG]

    <tuffty/>
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  13. Wilts
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    Wilts Member

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    [Jul 12, 2012]
    Cheers tuffty as always fella, the above dv is what ive got but its just to loud whooshing all the bloody time lol!!
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  14. Benjiman46
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    Benjiman46 R-Tech Terrorist

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    [Jul 13, 2012]
    Diverter valves do whoosh, it can't be helped. Albeit they are quieter than atmospheric dump valves, but they still make a noise. They are just doing their job.

    Ways to make the whoosh quieter;

    -Replace the under bonnet sound proofing or make it more efficient (add more) but then you risk higher under bonnet temps.

    -Standard airbox, smoothed, with a green cotton filter if you want performance.

    -Put the map back to standard (if it's remapped) as obviously, more boost = more pressure release on throttle shut off, therefore more whoosh.

    -Buy a clio 172/civic type R or a similar N/A lightweight, shopping trolley.
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  15. Big_jim
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    Big_jim Member

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    [Jul 13, 2012]
    Whats having it the wrong way around do?
    How does it even work upside down?
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  16. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jul 13, 2012]
    Its not upside down in true sense... what it means is the outlets are connected opposite to how they are normally so instead of boost going in the side it goes in the bottom... the issue with this is that boost is then pushing on a larger surface area underneath the piston forcing the valve open rather than being in e the piston chamber helping keep it shut... this leads to potential boost leaks as the piston may not fully close and laggier spool

    <tuffty/>
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  17. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Jul 13, 2012]
    I remember that putting the DV the other way round use to be a mod on S3's due to the flow of boost, it's suppose to 'open' quicker! lol Boost leaks was never mentioned, and it made a better noise apparently. But with today's knowledgeable people on the site, it's all wrong wrong wrong! Put it the right way round!! :)
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  18. ads1377
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    ads1377 Member

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    [Jul 13, 2012]
    I accidently did it ...oops!! and the noise is horrible
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  19. Wilts
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    Wilts Member

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    [Jul 14, 2012]
    Is there other dv that make a better noise?
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  20. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Jul 14, 2012]
    What noise are you after? Jap car dumping noise? or just a more noticeable dump on throttle release?
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  21. Wilts
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    Wilts Member

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    [Jul 15, 2012]
    Somthing that sounds like wastegate chatter not the whoosh ****.
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  22. Sam_
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    Sam_ Down under

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    [Jul 15, 2012]
    There's no such thing as "wastegate chatter". Not sure where that term came from.
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  23. Prawn
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    Prawn My other car is a MINI!!!!

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    [Jul 15, 2012]
    No, it cant be done. As tufty said, waste gate chatter is a myth that doesn't exist on these cars.

    Fitting a slightly stiffer spring in the dv will lessen how often it dumps during normal driving, but not stop it totally.

    What air filter do you have? An air box will give you almost no dv sound at all like you want
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  24. Wilts
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    Wilts Member

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    [Jul 15, 2012]
    Wen ya take dv off and block the pipes it makes a much better noise than whoosh so what do you call that? And wastegate chatter ive heard a millon time over the years so must of come from somwhere?? Ive got a a piperX filter and carbon pipe.
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  25. superkarl
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    superkarl MAN OF STEEL

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    [Jul 15, 2012]
    IF you were to block the pipes and remove a DV, all you are doing is storing boost when you lift off, which in turn fights the compressor wheel in the turbo causing it to stall (compressor stall) and you get a sort of fluttering/pigeon noise.
    this is BAD for the turbo, it puts lots of un-natural forces on the comp wheel and the shaft, rather than it being able to spin free.
    this is why all turbo cars are fitted with DV's as standard, to dump this boost and empty the boost system so the comp wheel is able to spin free with no pressure opposing it.

    if you actually knew what a wastegate was, i suggest you research it, you'd realise that there is no such thing as 'wastegate chatter'.
    some complete spaz of a chav has obviously come up with the term at some point and his chav following have continued to use it.

    cars, particularly jap cars, that make that noise are fitted with atmospheric DV's (blow off valves), and are designed to make such noises, some of these blow off valves even offer different attatchments to change the noise to whatever you desire. Some HEAVILY tuned cars, running so much boost also make this noise when lifting off on part throttle, you may see some cars rev a little and wooshwooshwooshwooosh, they will 'chatter', this is due to the amount of boost they run and the hhhhuge dv they require not quite getting rid of all the boost in the system, again giving compressor stall.

    there is no way on these cars, unless you spend a fortune in tuning and stand alone ecu's and run mafless with lots of boost that you will make a similar noise.
    all you can achieve is a standard 'ptsshhhhh', enhanced by a large open cone, increased boost, an aftermarket RECIRCULATING dump valve, and perhaps some sound deadening material removed from under the bonnet.

    hope i've cleared it up for you
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  26. cjsuk
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    cjsuk Active Member

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    [Jul 15, 2012]
    You call it an eventual broken turbo, the "chatter" (flutter) is a nice noise (to some) but it's a bad noise as mentioned above.

    Some mushrooms look lovely, but they will kill ya!
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  27. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jul 15, 2012]
    erm...

    DV is there for a good reason.. to prevent pressure surge getting back to turbo...
    flutter chirpy noise you seek is like on cars which dont have functioning DV's... and on your turbo is not advised.

    want chirpy noise, disconnect it, but dont come moaning back here when your turbos gone wrong.. cool noise or not its supposed to recirc boost back into intake, and if this "woosh" is too noisy for you, revert your intake to std airbox to silence it

    simples

    your choice

    enjoy
    #26
  28. Wilts
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    Wilts Member

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    [Jul 15, 2012]
    Thanks for the info superkarl when i joined i did say its my first audi so people need to understand that, i can now tell others that tell me about this wastegate chatter noise is aload of porkys lol.
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  29. cjsuk
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    cjsuk Active Member

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    [Jul 16, 2012]
    People are not having a go, it's just that you started a thread with a question and you got an answer (the answer you diddnt want, but the correct anwer none the less). Then further down you diddnt seem to be getting it lol.

    I have never had a turbo car but by reading and taking advice of the guys n gals on the forum I'm now getting there and can bore most of my family senseless talking about turbo's lol.

    You have been lucky in that, the lads who have replied on this thread are pretty dam knowlagable on these cars, I have gone as far as crowning tuffty as a geek on another thread of mine which I hope he is prowd of :)

    So just to recap:

    1. Westgate chatter - no such thing (unless you go out in wakefield on a fri/sat night).

    2. No DV - Will kill your turbo

    3. DV Wrong way round - will torture your turbo worse than the talaban did all those people and eventually kill it.

    4. Stay away from chav's especially owning an Audi, you dont want your car catching a disese like rust by sitting next to a rusted chavvy corsa!.

    :)
    #28
  30. S3 zombie
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    S3 zombie New Member

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    [Jul 16, 2012]
    Slightly off topic but, i'm also getting this mentioned "fluttering" sound from the 007p (or something in that area)but when the turbo's spooling,especially in high gears at low revs..seems worse after fitting badger5 tip and jetex but it did it on standard airbox aswell..any ideas anyone?
    #29
  31. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jul 16, 2012]
    surge, and spike of boost is the cause.. cap your likely spike with mbc or adjust map are resolutions to this. (check DV spring is holding and stiff enough also)

    high flow TIPs flow more air, sooner......... so if spikey map, the rush of boost initially (presuming its doing this-likely) then until the engines ready to injest the airflow it can flutter... usually gone at 4krpm where the engine has enough revs on it to injest the airflows
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  32. S3 zombie
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    S3 zombie New Member

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    [Jul 17, 2012]
    Could this be damaging the turbo then Bill?..your right about it stopping above 4/4.5krpm, i serviced the DV when i fitted the tip and all seemed ok (yellow spring) although i am going to refit the standard one just to rule it out...the map is a customcode stage 1 (jbs) and always been a bit all or nothing when coming on boost..i am going decat and stage 2 in a few week (again at jbs as their nearest to me) is this surge/spike something they could adjust in the map?

    Thanks,phil
    #31
  33. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jul 17, 2012]
    yep.. they can map it to suit on stage 2. tell them about it and that you dont want on/off delivery and they can make the stage 2 to suit
    #32

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