Like the title says. How do you get that whistling sound?

Somewhat in like this video: http://www.youtube.com/watch?v=jIU76jb5XfU

Thanks for reading!

 

The sound in the video is not the turbo. It is the blow off vlave. Sounds like an HKS SSQV.

 

really? How do I get a really high whistle?


PS. I think I just made a fool of myself but I don't know much about the turbo, etc.

 

You just need a BOV with a diffusor/soundmaker in the BOV's exhaust. You can get a PSSSH! if you just vent the stock BOV to atmosphere.

To get the whistling of the compressor/turbine spinning you need intake and/or downpipe.

 

that, however, is recommended against, as apparently the stock BOV tends to leak and thus will result in an intake leak and you also may not be able to generate as much boost as you should.

 

well you need to get the details. You don't WANT the whistle as much as you NEED to relieve the pressure.

When the TB closes it sends pressure back to the turbo which makes the turbine spin the opposite way (potential damage). The BOV relieves that pressure and as an added bonus it makes noise. So you might WANT the noise but what you truly want it to protect your turbo.

www.howstuffworks.com

 

Hahah.

uhm get rid of that massive "cold" air box and stick a filter on
it'll open it up a bit and you can hear quiet the difference

 

Am I the only one that HOPES he has a TII??????

 

My HKS SSQV sounds kinda like that. I'm sure he's running a hell of a lot more boost than I am, though.

 

+1

Does the OP own a turbo?


-Ted

 

The stock BOV works just fine. It is open at low loads to minimize the spool time for the turbo. That is why venting it to atmosphere is a bad idea.

 

his profile says he has a celica GTS im pretty sure thats the turbo AWD celica am i right?

 

Actually...no, it isn't.


-Ted

 

If he has a recent one, then its just a regular, FWD 4-banger. Its the top trim model for the ones that came out early 2000's. It just has a slightly massaged 1.8L 4-cyl.

 

unless it says alltrac on the back it's not a turbo anything.

I'd get the Acura NSX one:

http://cgi.ebay.com/Acura-NSX-Exhaus...QQcmdZViewItem

 

First you install a turbo.... then you buy a blow off valve.

 

https://www.rx7club.com/showthread.php?t=686191

Do you think that one will make the whistle?

and yea it's just FWD and I also have an integra. I'm selling the integra and getting a T2. Maybe that guys T2

 

My SSQV is ridiculously loud... People can tell that I'm coming blocks away.

I might change to a different one in the future haha.

 

Here ya go pal - you need this to ontop of you fake bov

 

if you are talking about an itermediate *woosh* or *phsew* sound, then that is the BOV. however, it sounds to me like you are talking about the "constant" whistle heard from the turbo spooling. it may surprise you that this sound eminates from the compressor housing enducer (not the turbine side). its casued by air around the compressor wheel blades creating high frequency pressure waves as they roll off the edges of the blades. this sound is naturally always going to be there, most intake systems are desgned to minimize this sound to various extents. the noise reduction is purely a driver comfort issue, and the reduction of noise does not help performance. it also doesn't really hurt performance either, it just kills some of the noise. some turbochargers even have built in noise supression rings on the compressor enducer to kill the sound further. usually the only turbos that have these rings have anti-surge machining at the compressor enducer, so this is mainly on newer or more expensive turbos. if you really want to make your turbo as loud as possible:

ensure that there is no silencer ring on the compressor enducer (probably not there if the turbo is older)

convert your intake to the hardest, thinest material possible (metal pipe).

do not use an air box, just run an open air filter.

that should make the turbo about as loud as it can get.

cheers,
Max

 

loud spooling noise also can mean its time for a turbo rebuild

 

hx35, hy35s have silencer rings!