Injen

Hi all.
I have a HKS SSQV mounted on my car right now and i start to get really tired of the sound from it.
I've try both cheap copys to expensive valves (Forge, HKS, Blitz), but i cant find the sound that i looking for.
Any suggestion?
Just to give you guys a hint what i looking for
S2000 vs Impreza Touge Battle

And again, sorry for the lack of my English
-I-

hux309

That chirping is what some refer to as wastegate chatter even though it isn't.

It's usually when you aren't running a bov, it's the noise of the unused boost when lifting off going back down the inlet and bouncing of the tubine blades, causing the turbo to stall.

Also known as compressor surge.

Not good for the turbo whatsoever.

YouTube - subaru rally car wastegate

wraggy78

Let me know when you get another one sorted and ill buy your hks off you mate.providing its in good working order that is ...

Jam Performance

iTrader: (3)

sard r2d2 blowoff valve has that kind of sound

hux309

Fraid not otherwise id be buying it myself.

YouTube - WRX [Sard R2D2/Borla Hush]

silent running

If you want to hear compressor stall, just run an open induction kit rather than an airbox and remove your dump valve, just block the two open ends of the pipework where the DV would have gone. Every time you let off the throttle you'll hear a twittering noise which is the trapped charge backing up against the compressor blades.

I won't guarantee the life of your turbo though, some can take it, some can't.

rigga

iTrader: (4)

TD series turbo's will be fine running without a dv,i have a forge vta fitted with the hardest red spring on a td05 16g which makes that sound at moderate boost as the spring has yet to be overcome so the boost air backs down and hits the turbo vanes as described.... more boost and the vta works as intended and gives the natural blow off sound..... few that have run td series turbo's without dv's for thousands of miles with no problems.


Wouldnt reccomend running a vf series turbo without a dv though,weaker blades apparently that can break up easily and cause engine damage.

skywalker23

I get chatter on mine ,2.0 turbo wagon,standard turbo,Powertec induction kit....

Love it....

Injen

As i tought. I got some friends that runs witout dv, but as you guys says, it's not good for the turbo.
But i still looking for a new BOV so i you got recommendation so post it.

-I-