Gaz6002 Posted June 30, 2007 Share Posted June 30, 2007 Mine used to do this a lot on #1 when cold and warm. Then I went TTC and it stopped, only to be replaced with another sound! When I'm at WOT and the engine is under heavy load and I lift off quickly the car makes a noise that kind of sounds like a very high pitched voice saying "F**K Youuuuuuuuu"... I'm betting on a faulty stock BOV but it gives my car character so i'll forget it for now Quote Link to comment Share on other sites More sharing options...
hadyn Posted June 30, 2007 Author Share Posted June 30, 2007 Could it be shagged ducting to the SMIC?? Just had a brainwave about that. Quote Link to comment Share on other sites More sharing options...
Krister Posted April 12, 2009 Share Posted April 12, 2009 Bump. My friends Supra is doing the "wwoooooo" sound at partial throttle on the 1st turbo like most have described on this thread. Car has an Apexi induction kit. Is there a general consensus that it's the stock BOV that makes the sound? Quote Link to comment Share on other sites More sharing options...
hadyn Posted April 12, 2009 Author Share Posted April 12, 2009 Mine did it with a HKS SSQV bov. Quote Link to comment Share on other sites More sharing options...
Krister Posted April 12, 2009 Share Posted April 12, 2009 Mine did it with a HKS SSQV bov. Was your stock bov removed completely? Quote Link to comment Share on other sites More sharing options...
hadyn Posted April 12, 2009 Author Share Posted April 12, 2009 Yup I'd say it was loose or worn turbo pipework. I've replaced mine over the years and the noise has gone. Quote Link to comment Share on other sites More sharing options...
manny Posted September 19, 2009 Share Posted September 19, 2009 Mines been doing this since having a boost controller fitted, when first installed the garage didnt bypass the actuator vsv so the 1st turbo was boosting at 1.2bar and i had a wailing noise that sounded like a police siren. Now capped off the vsv and the noise is still there a bit when cold. First thought my 1st turbo was fcked but as its a jspec apparently they don't sound like this on their way out? All pipework seems ok with no obvious leaks. I also have an HKS bov which seems to be spitting more oil vapour than usual. Quote Link to comment Share on other sites More sharing options...
dan294 Posted September 16, 2010 Share Posted September 16, 2010 Mine was doing it on the stock BOV, put an SSQV on yesterday and its stopped altogether! Quote Link to comment Share on other sites More sharing options...
shaz2010 Posted December 24, 2013 Share Posted December 24, 2013 I had the woooohhhvvvvvoooo noise was driving me nuts, installed hks bov and the noise has gone. So defiantly was the stock bov leaking! So happy it was just that so I lose the noise now I have a better noise Quote Link to comment Share on other sites More sharing options...
ccssupra Posted December 24, 2013 Share Posted December 24, 2013 I have had my stock TT Jspec for 2 months and this is am problem I have, previous owner said its happened for a few years. It is certainly coming from the drivers side under the bonnet. If I hold the revs at say 2.8k and can hear the turbo whine, then the howl will making the sound but only when its cold. Does not do it under load. Im glad I am not the only one with the problem though, I will try and obtain a new OEM BOV. Quote Link to comment Share on other sites More sharing options...
shaz2010 Posted December 25, 2013 Share Posted December 25, 2013 I have had my stock TT Jspec for 2 months and this is am problem I have, previous owner said its happened for a few years. It is certainly coming from the drivers side under the bonnet. If I hold the revs at say 2.8k and can hear the turbo whine, then the howl will making the sound but only when its cold. Does not do it under load. Im glad I am not the only one with the problem though, I will try and obtain a new OEM BOV. Exactly the same as mine mate! In the summer I changed my diff oil thought it might of been that! But now that I've put the new bov on it's completely gone I would defo get a new bov or a aftermarket one. It came in 2.5k same time as yours sounds like when you blow into a empty beer bottle. I'm over the moon now it has gone like. Quote Link to comment Share on other sites More sharing options...
ccssupra Posted December 25, 2013 Share Posted December 25, 2013 Exactly the same as mine mate! In the summer I changed my diff oil thought it might of been that! But now that I've put the new bov on it's completely gone I would defo get a new bov or a aftermarket one. It came in 2.5k same time as yours sounds like when you blow into a empty beer bottle. I'm over the moon now it has gone like. Yup, thats certainly the sound, I thought the turbo was a gonna or needed re-balancing etc. New BOV it is! Quote Link to comment Share on other sites More sharing options...
shaz2010 Posted December 25, 2013 Share Posted December 25, 2013 Quote Link to comment Share on other sites More sharing options...
Mike_Mac Posted December 25, 2013 Share Posted December 25, 2013 Just to chuck in 2p on this one I've had exactly the same sound a few years back - it was the reed valve under the IACV VSV, which wasn't sealing correctly. This meant that as the Turbos spooled there was a slight gap which created the "whoo" noise. Stripped it down cleaned it and replaced the two gaskets = problem cured. Quote Link to comment Share on other sites More sharing options...
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