hi guys i am not sure wich dirrection to go down, really i am after the sound of a wategate like this car in the video, yes i know its a diesel but even so i have hear this from lots of jap cars.

Is it possible to get this sound from an impreza i dont really like the sound of the bov or dump valve its a bit boy racer.

thanks david

 

What video?

 

yes you can get the sound you have here from a subaru impreza!! just turn it off!!!

 

Can't see the vid, but I'm pretty sure the sound you're referring to is turbo stall, often mis-named wastegate chatter.

Generally you get it by removing the dump valve and blanking off the hole. It's harder on the turbo than a DV set up though, some will tolerate it, some won't!

You'll need to go for an induction kit to really hear it though IIRC, as the std airbox masks the induction noises to a large extent. The problem with this is that, for cars under a certain power level (i.e. the level where an FMIC becomes advisible, which necessitates a induction kit) they're really not optimal and you're better off with the std airbox.

How much do you want the sound?

If you have a VTA dump valve installed and don't like the whoosh, simply revert back to the std recirculating DV which is very quiet!

Need more info on your car and any mods, really!

Ns04

 

sorry.

YouTube - Pete rippin through the parking lot

 

LOL if you're concerned about being deemed a boy racer, whatever you do don't post any vids yourself of "ripping" through a car park.

Hard to discern the noise from that vid, sounded a bit like a tame VTA DV to me.

Is this the sound your after? Its what turbo stall sounds like

YouTube - Subaru Impreza GT Kuruma

Excuse the terrible music!

Ns04

 

yes that is the exact sound i am looking for, you hear it alot from skylines,
sorry about the video but its the only one i could find on youtube of that sound. i dont know this person.

Whats a VTA dumpvalve and also if i do blank off the dv will it destroy the turbo, i think its the standard turbo unit.
thanks David

 

If you have a bigger turbo upgrade and it has been mapped according to it should be fine. but for example if you have a UK spec with the standard TD04 & it has not been mapped, then in my opinion it would cause damage gradually and reduce the life of the turbo.

 

"VTA" = Vent To Atmosphere as opposed to a Recirculating type.

 

I've completely blanked off a TD04 running average boost and in my humble opinion it does give that evil noise u are referring to . I was unsure at first as well but a few other opinions convinced me. Besides, my new TD05 was £50 plus postage so im not too worried if it shortens the life span marginally. I've heard the blades in these are fairly robust anyway so pass the blanking plugs my good man

 

true say 50 quid not bad, it does sound sexi...u will get girls give u numbers like uve done black magic on them. brrrrrrrrrrrrr wooo shi shii shii shii

 

Just about to do this with mine using a big solid stainless steel rod (cheaper than blanking plates for me).. Im doing it to pinpoint a problem though! DId it before but i had problems.. but the problems may have been related to my actuator!

 

VTA = Vent to atmosphere, whooosh sound!

TD04s are tough little buggers, as are 05s. Would most likely be ok, check with a reputable tuner though.

 

Yes they will be handing you phone numbers of the nearest mechanic because they think your car is broken.

You seriously think that blocking a dump valve is gonna get you a date??omg


Back on a more adult topic.......the TD** series turbo's are more robust than the IHI VF** turbo's.

Sorry but I dont see the logic? You have a remap -----> runs hugher boost ------> more back pressure on the compressor blades.

Mapping it will not do anything in the way of preventing damage or reducing it.

 

i have a 1994 sti import.

listen to this vid of top gear its a p2, scooby based prodrive production car, if you listen you can hear the sound i am looking for, i am sure they have not blanked anything off, so how do they get this sound from the car. watch the vid and at 2 min you will see what i am talking about

NOT the chh chh chh chh sound

but the coo coo coo coo

sorry its hard to spell this sound


YouTube - Prodrive P2

 

copy and paste from the web

There is a common myth in the automotive world about so called "wastegate chatter" or "turbo flutter", a noise created on lifting off the throttle in a turbocharged car. The sound is commonly described as a chipmunk or a rattlesnake and is often stated incorrectly as being a result of the turbo's wastegate closing.

The noise is in fact the air compressed by the turbo passing back through the compressor wheel of the turbo after the airflow is abruptly halted by the throttle body closing, called compressor surge. However, in some cases, i.e. where the throttle body doesn't open fast enough or is set up to only react to high boost, some chatter will remain. Surge can occur on diesels when the turbo is attempting to pressurize the air at a higher pressure ratio than the compressor wheel can flow at a given speed. Diesels have no use for a Blow off Valve as they do not have a throttle plate.

 

If ur a fly mexican bwoi like me then yes u will get a date.....maybe they myt giv u the mechanics number to sort ur bold patch out

 

Am i not right in saying that the hks ssq one thingy makes exactly the same sound as that?

 

ive blanked mine off, with a td05 and 1.5bar its sounds exactly the same as scoob in video! very safe to do with the 'td' series

 

sorry to jump in thread but ive just removed my hks ssqv and put my standard one back on. not getting any noise what so ever, like the chatter noise and would like that noise now.
my question is what do you mean when you say blanking up? blanking what part up.
was thinking of getting a forge recirc but wasnt sure. cheers for any help

 

We've covered this before and its always quite controversial, i got my info from old bob, who was advised by Zen that TD's are up to the challenge if u are looking for chipmunk chatter. From completely blanking, one of my concerns was that this pressure would be going elsewhere and perhaps be detrimental elsewhere under the hood. As far as im aware its not, and so far so good. It depends on circumstances i guess, if i had newage or anything post 05 say, i would leave it with the standard recirculating valve.

 

remove the valve, then just blank off the pipe from the intercooler and the one on the air filter intake pipe! oh and the lil vacuum pipe to, like i say though only with a td turbo

 

You know nothing about scoobs or girls mate, blanking off the Dv is a known chick puller, use the search option and you will see

 

brilliant, and wagon owners have room for one for each day of the week

 

Yeah damn right, im blanking mine off when i get home, then off to pick the misses up.. i fully expect her to go down on me after i change gear for the first time

 

Purists beware this is what Impreza ownership is all about.

 

pmsl

 

ive been blanking up th DV on my cossies for years, sounds muchos better than any dump valve, my old wrx import use to make more noise on throttle closure than a flock of pigeons,,,,

 

not wanting to sound dumb but still dont know where. i have a newage with sti8 top mount.
so i just put a blanking plate on the intercooler and put a bung in vacuum and other pipe(one that leads into bottom of standard recirc)?
is there a bennifit to this or is it just for noise

 

Does she vent to air or recirculate