I've been downloading some vids on the net...and I've been hearing some different sounding blow off valves...

Instead of the sounds of the WRX Recirc/Blow Off valve "PSHHHH" or "PTCHEEE" or even a high pitched whistle...

I've been hearing some worked cars (Supra, Skyline, Evo, even a SRT) have blow off's that sound like a low stuttering kind of sound...it almost sounds like an electronic game....pooh poh poh poh...

Are these cars running external wastegates? They sound really cool...the ones I have been hearing are from the inside of the vehicle...

 

Its a certain type of BOV. The way its made. A friend had one on his car. Sounded cool. Like Orido's Supra

 

Wonder what type it is...it sounds nice...

 

Infek's one sounds cool...it's a high/low stuttering sound!

HKS is high pitched pew
Forge is low poosh

...forgot what the others sound like.

 

Greddy Type S have many sounds since you can adjust the spring and remove or install springs inside.

 

Only a handful of BOVs are compatible w/ our cars. Blitz....... is not one of them~! So do some research first. Good luck.

 

My APS Dual Vent has


an airy sounding Pitcheeeeeeee...when I boost it...otherwise it totally recirculates and makes a much quieter sound.

I like the way the venting sound gets broken up into parts...I went on some other sites and they say it's a combination of bigger turbo, external wastegate...HKS SSQV older model?

They also say it is from compressor surge...

 

my friend was telling me something about that, he said he couldnt remember the name of the bov, cricketing or something i dunno.

 

those are jdm bovs... i think...you mean like the skyline in 2f2f, right? ask jon, he has a r2d2

 

I have HKS SSQ on mine it makes the poh poh poh sound, not too obnoxious but not overly quiet, its my favorite sounding one.

 

the bov that you have is the

HKS SSQ? is this the same as SSQV?

R2D2...the SARD? Hmm...this is getting interesting...

 

Yes...those things sound awesome...now I am on a mission to hunt one of these down...

 

I always thought the fluttering sound comes from compressor surge, as the turbine blades pulse through the air due to the bov being too tight and air having to escape back into the turbo. Possibly the piston in the bov is fluttering too and helping cause the noise.

 

I'll try and post it somewhere...the Supra sounds very cool...

 

https://www.i-club.com/forums/engine-power-ej20t-pre-2006-wrx-jdm-60/sard-r2dr-sound-clip-99317/

Pm "jumpman23" for a sard r2d2 sound clip/vid....it doesnt sound like the cool stuttering noise though. but Jon's r2d2 sounds like it. diference being Jon=auto tranny/jumpman=manual. go figure

Jon told me its the wastegate flutter that makes that stutter sound....i have txs rfl and on low boost it has a cool stutter sound also

-ROB