EM TuningChris Nott
Page 2 of 3 FirstFirst 123 LastLast
Results 41 to 80 of 82
Like Tree4Likes

Thread: Turbo Chatter

  1. #41
    sam4191's Avatar
    If In doubt, Flat out!

    Status
    Offline
    Join Date
    Feb 2009
    Location
    Highcliffe, Dorset
    Posts
    399
    Good idea, cheers welly.
    Another thing I forgot to Put is that when idling and revved to 5k there is no chatter/ flutter noise just the tshh. As when driving hard. Only seems at low revs it chatters. But will try get hold of a standard dv an try that.


  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #42
    "Stick a V8 in it!"

    Status
    Offline
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    14,904
    Quote Originally Posted by badger5 View Post
    vacuum opens a DV not boost
    But presumably the vacuum has to overcome the spring, which it might not be able to do if theres no pressure (ie boost) on the other side of the diaphragm/piston also acting on the spring?

    Otherwise the DV would just stay open all the time once the engine went under vacuum...

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  4. #43
    Prawn's Avatar
    My other car is a MINI!!!!

    Status
    Online
    Join Date
    Dec 2006
    Location
    Basingstoke
    Posts
    9,067
    Think about how a piston type valve like the 007P is arranged though, the boost pressure does not act on the base of the piston, but on the side, so no amount of boost pressure is ever going to help it open. it's all done by the vacuum. this is why you can get a flutter as the DV won't open off when backing off gently, as there isn't enough vacuum generated to pull it open.

    I'm fairly sure, that under full closed throttle on overrun, the DV will indeed stay open the whole time, then shut when you reappply the throttle
    -------------------------------------------------------------------------------------------------

    Prawns TFSI Turbo'd 1.8T Track Car

    But I know nothing so ignore me.

  5. #44
    Smokey_clark's Avatar
    12th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Nr Bath
    Posts
    210
    I only get slight turbo chatter when engine is cold, car is mapped etc and i have the second dv spring up (yellow i think).

    Am i right in thinking the cause of this is not enough vacuum in vacuum chamber to operate dv for first 2-3 mins or could something else be at play such as leak in vac pipes or sticking dv? (hopefully not cracked turbo like earlier post!!)

    Also is this an issue as i obviously don't reach high levels of boost and is only for a couple mins when cold sometimes.

  6. #45
    S3 HODGE's Avatar
    Brown passenger seat.

    Status
    Offline
    Join Date
    Apr 2009
    Location
    Dorset
    Posts
    1,177
    Quote Originally Posted by sam4191 View Post
    Good idea, cheers welly.
    Another thing I forgot to Put is that when idling and revved to 5k there is no chatter/ flutter noise just the tshh. As when driving hard. Only seems at low revs it chatters. But will try get hold of a standard dv an try that.
    Ive got a couple of standard S3 DV's lying around mate, Ill bring one in on Monday xxxxxxx

    The One And Only Brown Bora

    Current: 2007 S3, Solar Orange - Revo Stage1 + all the toys
    Sold: 2000 S3, Black
    Sold: 2003 BAM Nogaro Blue S3, Revo Stage2, 19" Rial Daytona's, AP Coilovers
    Sold: 2001 A3 1.8T
    Sold: 2002 A3 1.8T, Custurd Code, BBS CH, AP Coilovers
    Sold: 1999 A3 1.6, Jewish Racing Gold, S4 Wheels

    Xbox live ID: o_HODGE_o
    PS3 live ID: Hodge_09

  7. #46
    shanejess
    Guest
    stop the world i want to get off, id be on anti-depresents if i took in most posts on here, a few of you need to be more optermistic and have a more all round feeling of joy and hapiness no doom and gloom everything ruins your engine mentality, surely the chatter is because everything is open ie large cone not boxed away so you carnt here it. and then again it might be me, permanently happy and positive and nieve.

  8. #47
    sam4191's Avatar
    If In doubt, Flat out!

    Status
    Offline
    Join Date
    Feb 2009
    Location
    Highcliffe, Dorset
    Posts
    399
    Quote Originally Posted by S3 HODGE View Post
    Ive got a couple of standard S3 DV's lying around mate, Ill bring one in on Monday xxxxxxx
    Cheers Budddyyy!!!!!


  9. #48
    www.badger5.co.uk

    Status
    Offline
    Join Date
    May 2004
    Location
    nr Glos
    Posts
    6,939
    Quote Originally Posted by aragorn View Post
    But presumably the vacuum has to overcome the spring, which it might not be able to do if theres no pressure (ie boost) on the other side of the diaphragm/piston also acting on the spring?

    Otherwise the DV would just stay open all the time once the engine went under vacuum...
    too stiff a spring in there perhaps if so
    **http://www.facebook.com/Badger5Ltd**

    Check out the ever Growing eBay Shop>
    http://stores.ebay.co.uk/Badger-5-LTD?_trksid=p4340.l2563

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  10. #49
    LiveWire's Avatar
    S3X

    Status
    Offline
    Join Date
    May 2009
    Location
    Bristol
    Posts
    328
    I fitted a new Yellow spring to my 007p a few days ago and had the problem of the dump valve not opening enough, I also had some flutter from the turbo so I changed back to the Green spring and all is now ok, no flutter just the 007p doing its job correctly.

    My car is remapped so I thought the Yellow spring would be suitable but I was wrong, it could have been the new yellow spring needed to soften up or bed in but I didnt want to risk it to be honest.
    52 plate S3 / Ming Blue / 60K / Celtic Tuning Re-Map, Allegedly 278 Bhp-256 lb/ft (not proven/no chance)

  11. #50
    Broken Byzan's Avatar
    Photographic Moderator

    Status
    Offline
    Join Date
    Apr 2004
    Location
    Cardiff, United Kingdom
    Posts
    12,355

    My Social Networking

    Follow Broken Byzan On Twitter Add Broken Byzan on Facebook Add Broken Byzan on Google+ Visit Broken Byzan's Youtube Channel
    Quote Originally Posted by shanejess View Post
    and then again it might be me, permanently nieve.
    Yup, i agree.

    A Wooshing noise from cone filter/open airbox is fine, chatter is compressor stall, bad for turbos with small shafts like the k04s. That is not my opinion, it's a fact.

  12. #51
    shanejess
    Guest
    what is a k04s, or am i nieve.

  13. #52
    1st Gear

    Status
    Offline
    Join Date
    Jan 2011
    Location
    N.Ireland
    Posts
    149
    These DV's seem like they are just another thing to go wrong in a car, whats the real benefits of having one apart from the tsssh noise?

  14. #53
    Broken Byzan's Avatar
    Photographic Moderator

    Status
    Offline
    Join Date
    Apr 2004
    Location
    Cardiff, United Kingdom
    Posts
    12,355

    My Social Networking

    Follow Broken Byzan On Twitter Add Broken Byzan on Facebook Add Broken Byzan on Google+ Visit Broken Byzan's Youtube Channel
    Quote Originally Posted by shanejess View Post
    what is a k04s, or am i nieve.
    It's a plural K04'ssssss, Ie more than one.

  15. #54
    Westy's Avatar
    Double Dark Side! Diesel & 8P

    Status
    Offline
    Join Date
    Dec 2008
    Location
    Cambridgeshire sometimes Hertfordshire
    Posts
    17,156
    Quote Originally Posted by Gavin G View Post
    These DV's seem like they are just another thing to go wrong in a car, whats the real benefits of having one apart from the tsssh noise?
    The standard bosch dv tends to split it's diaphram on a remapped car where as the 007p is designed to withstand the added pressure.
    8P A3 TDI - 220bhp - 335lbft
    A3 Maintenance Thread
    Bye bye S3 you will be missed.
    S3 Build Thread







  16. #55
    [Dave B]'s Avatar
    Rrrrrrrr-tech

    Status
    Offline
    Join Date
    Jan 2003
    Location
    Manchester
    Posts
    1,970
    My 2penneth -> I ran a standard DV on my old unmapped 1.8t. It died a natural fluttery death at ~100k miles and I hadn't changed it in the 50k I'd owned it so I expect it was the one from factory. I've always run a standard DV on my mapped S3, I replaced it recently whilsy doing some troubleshooting but it turned out the old one was still functioning normally, surprising considering I'd been running it in a car that had a knackered N75, dodgy Jabba map and was boosting to over 26psi on a standard K04....

    Anyway, on my standard N75 I get a lovely woosh when coming off throttle (audible due to TIP/filter) and zero chatter on throttle. I recognise that the 007p is a more robust design but the standard DV isn't THAT bad (assuming it's not split).
    > S3 225 (03) - OEM+
    > 205 GTI (90) - Limited Edition Miami Blue with full leather - 1 of only 300 made
    > Clio v6 255 (05) - Lethal Weapon

    View: My S3 diary

  17. #56
    A3 T's Avatar
    Lord Of The Rings

    Status
    Offline
    Join Date
    Feb 2011
    Posts
    999
    Mine sounded a bit like this one before i sorted it

    Audi A3 T sport (8l) AUM 2001..... Stage 1 Remap , Bailey DV30 , HID Headlights , LED Sidelights/Footwells , Catch Can , N249 Bypass , Tinted Windows .....

  18. #57
    bazil's Avatar
    BOOM BOOM

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Scotland
    Posts
    135
    mine dont do that, its woosh's when dumping boost but flutters when pootling about, i'll try and get a vid up soon as i see others with early APY engines saying the same as me.
    sam4191 likes this.

  19. #58
    sam4191's Avatar
    If In doubt, Flat out!

    Status
    Offline
    Join Date
    Feb 2009
    Location
    Highcliffe, Dorset
    Posts
    399
    YouTube - ‪Audi S3 Turbo‬‏

    That chatter sounds the same as mine


  20. #59
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,455
    Wow that really is quite loud. Naaaaaat good

  21. #60
    5th Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Plymouth
    Posts
    939
    a video of the turbo chatter on my a3: YouTube - ‪Audi A3 1.8T blow off‬‏

    im guessing its broken and i need a new DV?

  22. #61
    1st Gear

    Status
    Offline
    Join Date
    Jun 2011
    Location
    S.E. Melbourne/ Australia
    Posts
    146
    Quote Originally Posted by sam4191 View Post
    YouTube - ‪Audi S3 Turbo‬‏

    That chatter sounds the same as mine
    Mine sounds exactly the same plus it wistles quite loud
    2000 Brilliant Black TT Quattro.
    2010 Daytona Grey TTRS.

  23. #62
    Neutral

    Status
    Offline
    Join Date
    Oct 2009
    Posts
    90
    Without wanting to hijack, I've got the fluttering only on full boost which is completely different from any of those videos.

    The seals in my 007p (yellow spring) look absolutely fine, and I've done the N249 delete. I've also replaced the turbo to charge pipe hose, and the other two hoses at the top of the charge pipe. I've had a bit of flutter before but now that I'm running Bill's TIP, the noise is much more prominant.

    The DV dumps fine every time I lift off, so I'm fairly sure it's ok. Presumably if it's only on boost, then it must either be a leak somewhere or an issue with the turbo? As it's not fluttering on lift of, is it still putting a lot of load on the turbo?

    Cheers
    Currently running a MTM stage 1 map, ECS brakes, Forge DV, Bager 5 TIP, 18" RS4s, Bilsteins, H&R springs, Tie bars, Milltek catback... but not for long...

  24. #63
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,455
    Surge? Is that likely tho on a standard turbo

  25. #64
    LiveWire's Avatar
    S3X

    Status
    Offline
    Join Date
    May 2009
    Location
    Bristol
    Posts
    328
    Quote Originally Posted by Piester View Post
    Without wanting to hijack, I've got the fluttering only on full boost which is completely different from any of those videos.

    The seals in my 007p (yellow spring) look absolutely fine, and I've done the N249 delete. I've also replaced the turbo to charge pipe hose, and the other two hoses at the top of the charge pipe. I've had a bit of flutter before but now that I'm running Bill's TIP, the noise is much more prominant.

    The DV dumps fine every time I lift off, so I'm fairly sure it's ok. Presumably if it's only on boost, then it must either be a leak somewhere or an issue with the turbo? As it's not fluttering on lift of, is it still putting a lot of load on the turbo?

    Cheers

    If you still have the Green spring for your 007p, I would change to the Green spring and see if that solves the problem.

    I tried yellow spring on my car but found it to stiff to allow the 007p to work properly, this is just in my experiance tho a lot of people get on fine with the yellow spring. Its worth a try as it only takes a min to change the springs.
    Last edited by LiveWire; 8th June 2011 at 14:25.
    52 plate S3 / Ming Blue / 60K / Celtic Tuning Re-Map, Allegedly 278 Bhp-256 lb/ft (not proven/no chance)

  26. #65
    s3dave's Avatar
    TFSI Hybrid

    Status
    Offline
    Join Date
    Nov 2009
    Location
    west yorks
    Posts
    10,061
    Quote Originally Posted by Piester View Post
    Without wanting to hijack, I've got the fluttering only on full boost which is completely different from any of those videos.

    The seals in my 007p (yellow spring) look absolutely fine, and I've done the N249 delete. I've also replaced the turbo to charge pipe hose, and the other two hoses at the top of the charge pipe. I've had a bit of flutter before but now that I'm running Bill's TIP, the noise is much more prominant.

    The DV dumps fine every time I lift off, so I'm fairly sure it's ok. Presumably if it's only on boost, then it must either be a leak somewhere or an issue with the turbo? As it's not fluttering on lift of, is it still putting a lot of load on the turbo?

    Cheers
    Have you got a sound clip/vid?

  27. #66
    Alex C's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Jan 2010
    Location
    Lizard, Cornwall
    Posts
    2,562
    Quote Originally Posted by shanejess View Post
    its called scare mongering
    scaremongering, the cheek of it, lol
    Alex S3 AMK
    Bilstein B8s, H&R Springs, Neuspeed ARBs, Genuine 18" BBS LMs & LCR Brembos

  28. #67
    bazil's Avatar
    BOOM BOOM

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Scotland
    Posts
    135
    how does this sound, i set of and change gear at 3000 rpm after light acceleration, when i lift of i hear flutter, i get into second gear and rev hard at full throttle to 5500 rpm and let of and hear the boost being dumped with no flutter.

    i now beleive that the flutter is simply due to there being not enough pressure to open the DV, i'll still need to get a video up but after i do my oil pick up pipe.

  29. #68
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,455
    Yeh its like there isn't enough vaccum under light driving.

  30. #69
    Neutral

    Status
    Offline
    Join Date
    Oct 2009
    Posts
    90
    If you still have the Green spring for your 007p, I would change to the Green spring and see if that solves the problem.

    I tried yellow spring on my car but found it to stiff to allow the 007p to work properly, this is just in my experiance tho a lot of people get on fine with the yellow spring. Its worth a try as it only takes a min to change the springs.
    Cheers LiveWire. Just ordered a green spring so will let you all know how I get on. Will also try and get a sound clip if I can tonight.
    Currently running a MTM stage 1 map, ECS brakes, Forge DV, Bager 5 TIP, 18" RS4s, Bilsteins, H&R springs, Tie bars, Milltek catback... but not for long...

  31. #70
    5th Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Plymouth
    Posts
    939
    Quote Originally Posted by smurfworth View Post
    a video of the turbo chatter on my a3: YouTube - ‪Audi A3 1.8T blow off‬‏

    im guessing its broken and i need a new DV?

    im guessing new posting people always get ignored round here?

  32. #71
    voorhees's Avatar
    Moderator

    Status
    Online
    Join Date
    Dec 2005
    Location
    Leafy Warwickshire
    Posts
    14,617
    Quote Originally Posted by smurfworth View Post
    im guessing new posting people always get ignored round here?
    That video isn't the best,it'd take five minutes to remove it and check it tbh.

  33. #72
    Dane's Avatar
    Faster than a V12 Q7

    Status
    Offline
    Join Date
    Nov 2009
    Location
    Cheltenham
    Posts
    3,991
    Quote Originally Posted by smurfworth View Post
    im guessing new posting people always get ignored round here?
    Sorry dude I was at work when I read your post and couldn't watch the video, that does sound wrong unfortunately what dv are you currently using? Its generally recommended to swap to a forge 007p, or the like, when getting a remap. Other posts about vacuum leaks should help if that doesn't solve the problem

  34. #73
    Reverse Gear

    Status
    Offline
    Join Date
    Jun 2011
    Posts
    5
    Quote Originally Posted by bazil View Post
    mine dont do that, its woosh's when dumping boost but flutters when pootling about, i'll try and get a vid up soon as i see others with early APY engines saying the same as me.
    I would say thats pretty normal. Its all dependant on throttle position and rpm etc

    If your on full throttle and snap the throttle shut the dump valve, or blow off valve (BOV) as we call it in Australia, will fly open and give you the wooshing noise. This is obviously normal

    If your driving around on light throttle the BOV will tend to stay shut and give you the chatter, or flutter, you are hearing. If the BOV was adjustable i would say loosen the spring pressure to allow it to open easier, but being a stock car i doubt this is possible.

    You hear people saying their turbo broke because of this chatter, then you hear stories of people running around with no BOV, which will make the car chatter like absolute crazy, and their turbo is still going strong.

    It seems to be very hit and miss.

    Is it bad for your turbo???? if your running high boost and your hearing it i would say yes, if its only on light throttle with small ammounts of boost i would say you wont have to many issues as it really doesnt take much air to make this noise, especially if you have a short inlet.

    If your hearing it while accelarating its called compressor surge and i would get the car looked at ASAP. This is normally caused by a bodgy mismatched turbo that someone has built or a problem and it should be fixed.

  35. #74
    5th Gear

    Status
    Offline
    Join Date
    Feb 2011
    Location
    Plymouth
    Posts
    939
    Quote Originally Posted by Dane View Post
    Sorry dude I was at work when I read your post and couldn't watch the video, that does sound wrong unfortunately what dv are you currently using? Its generally recommended to swap to a forge 007p, or the like, when getting a remap. Other posts about vacuum leaks should help if that doesn't solve the problem
    Cheers for the reply, its the standard one. Im new to turbo cars and its been like it ever since i bought it so i dont actually know what they should sound like. I can either buy a new standard one for £30ish or go for a 007p at a cost of £80ish. Depending on what everyone reccomends? Its bad how i like the sound of it now though is the 007p as loud as the standard one?

    Cheers

  36. #75
    superkarl's Avatar
    MAN OF STEEL

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Liverpool/Southport. N west
    Posts
    7,455
    Itl be the same sound, louder once remapped. Everyone will recommend the forge for reliability, but its your cash...

  37. #76
    sam4191's Avatar
    If In doubt, Flat out!

    Status
    Offline
    Join Date
    Feb 2009
    Location
    Highcliffe, Dorset
    Posts
    399
    Right. i know it has taken a while now.

    I managed to try a standard DV today. No different at all. Only chatters whilst cruising, rather than when giving it some.

    Measured the Boost pressure on Liquid on the way home this evening and measured 1010mbar (converted to 14.64psi) 1.01bar so i believe.

    What else could it be? I Dont see that there can be any leaks judging by the pressure.


  38. #77
    bazil's Avatar
    BOOM BOOM

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Scotland
    Posts
    135
    i got a video made but im having problems uploading it, sounds like you and i have the same thing and mine is a APY aswell, keep an eye out for this thread and i'll do my very best to get the clip uploaded, i beleive its just wastegate flutter.

  39. #78
    bazil's Avatar
    BOOM BOOM

    Status
    Offline
    Join Date
    Mar 2010
    Location
    Scotland
    Posts
    135
    Right, i taped a mini cam to my strut brace and went for a drive, due to slower cars i couldnt really boot it, around half way a got it opened up a little but its a great recording of how my turbo has sounded for the last 8 years and 70,000 miles in my hands, the car has a total of 100,050 miles on the clock with full Audi service history and no engine fault codes, it has plenty of go and never misses a beat.


    ( please ignore the time and date as ive never set them )

  40. #79
    Neutral

    Status
    Offline
    Join Date
    Oct 2009
    Posts
    90
    So I've replaced my green spring with a yellow one, and no improvement, it just made an extra whistling sound on boost suggesting perhaps that it was slightly overpowering the spring and leaking air straight form the TIP. I've since changed back to the green spring and the whistling has gone.

    In pulling everything apart however I noticed that the DV was pretty gunked up inside with black greasy grime, as well as the usual red lube. The piston (for want of a better word) wasn't moving particularly freely either which could potentially be the issue?

    Unfortunately my photos came out pretty poorly on my phone but you should get the idea.







    The gack is also fairly evident in the hose that going to from the TIP to the DV . Wierdly it's only in the silicone hose in between the TIP and the DV, and not on the inside of the TIP that it goes over (gunk only clinging on to the silicone).

    Any idea why there's so much black grease in the DV or are they all like that?

    I'm planning on cleaning it up properly. What can I use to re-grease the inside of the DV? I could potentially buy a new one but I want to know what's caused the issue in the first place.
    Last edited by Piester; 27th June 2011 at 13:28.
    Currently running a MTM stage 1 map, ECS brakes, Forge DV, Bager 5 TIP, 18" RS4s, Bilsteins, H&R springs, Tie bars, Milltek catback... but not for long...

  41. #80
    3rd Gear

    Status
    Offline
    Join Date
    Aug 2010
    Posts
    650
    Bazil. Sounds like a fubbared DV to me mate. thats how my old DV sounded before i replaced it.
    Genuine Audi Pink A3 1.8T, stage 1 remap. Genuine Audi bodykit and Reiger front bumper, 18's, JOM coillies down 50mmish, dewipered, debadged, 007P, K&N, Janspeed exhaust, Bose and a few other bits and bobs!


    WANTED: rubber mat which sits under ashtray in cubby hole
    drivers side wing mirror glass,
    bonnet in Devon area
    front brake discs for A3 1.8T

 

 
Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO