the "psst psst" sound

last SG · 2005-08-12T10:57:35+00:00

BOV doesn’t necessarily improve performance. Like in the case of wrx, the engine runs a close circuit air route so its not advisable to vent air to atmospher...

yeehaw SG

ok, i know this friggin topic's been posted like 298132750981759 times (to exaggerate) but i'm still darn curious and i think i want my doubts cleared on that sweeeeet sound that comes from some cars. i was told it comes from the turbo and i have done a lil google-ing on it as well and it says pretty much the same thing but how is it exactly done?

please tell me in layman's terms. as simple as possible Very Happy [/i]

ditzy SG

If you blow a balloon too big and you don't want it to burst, what do you do? Laughing

scotts07 SG

don't exactly knows wat u mean..although the psst psst sound which comes from the turbo is nice,but if u just in purpose,go and fix this turbo or change exhuast,is a waste of money.

kentheman SG

blow off valve

click here to check out

[email protected] SG

gee what makes the sound depends on what car it comes from doesn't it? From a car like an evo, its probably from a blow off valve because the car is powerful enough to warrent one. From some crappy car with no power, its probably a fake BOV simulator because the driver wants to pose. Laughing

bunny2002sg SG

me have seen one of those fake 'BOVs', just a little speaker and some hardware... Rolling Eyes Laughing

TwinTurbo_Supra SG

can we make a sticky thread on where the psst psst sound comes from? Laughing

yeehaw SG

hahaha. i guess we all know. just blow till it bursts

If you blow a balloon too big and you don't want it to burst, what do you do?

yeehaw SG

haha. thanks peeps Laughing

yeehaw SG

Twin_TurboSupra. neat post on the other topic on the blow-off valve. Very Happy

alexkusu SG

haha..so funny! Laughing

zichuan SG

its a turbo kit. no point fixing that.. increase abit horsepower nia.. shiok meh? just the sound only.. liew.. even its legal by lta, i drive pass tp road block they once hear this sound.. stop my vehicle.. nb..

HarryPussy SG

Dun know dun any how talk cock, the power increase is very substantial...

yeehaw SG

haha..so funny!

i just like that face. it's fun to see it move in sync. heh

Praetorian111 SG

Dunno leh... my car also got this irriating sound... Embarassed

dryver SG

that is the turbo boost being 'dumped' when the throttle is closed. the turbo compresses air into the cylinders, so when throttle closed, the compressed air is not needed, so it has to be rid of, so it goes out thru a valve. so it comes out making that hissing sound. most turboed vehicles make that sound, including buses and trucks.

so i wonder y zzit so cool on a car, when that sound has been around for eons.

sunnyMAN SG

ermm u sure it's the same for both buses and trucks?? common sense will tell ME dat its different..no doubt large vehicles are turbo-ed..you hear the sound from turbo cars when they release throttle..you hear it from buses when they park at the bus stop to release passngers..why on earth does a bus or a truck for dat matter needs to install a bloody BOV?? show off to passengers of SBS??

dryver SG

the BOV sound is emitted when the bus is on the move. that similar sound when the bus stops is the pnuematic parking brake being applied. don't get rhetorical, relak ...

sunnyMAN SG

icic
so you gotta be clear..parking brake say parking brake..dun mix it up wif turbo..and so why buses need BOV?? show off to who?? from my understanding it doesnt boost any performance..purely for sound

digicharat SG

tibs bus have nicer sound than sbs bus when stoping...
tibs bus their sound more sharp. and solid. Laughing