I have tried Google-ing the answer and searching here but was unsuccessful. Does anyone know what kind of BOV the JGTC Cusco Advan Impreza uses? It sounds kind of like a bird chirping/warbling, but I don't know my BOV brands by sound.

 

hks ssqv has a high pitched chirp but i dont think they would use that on a race car.

 

I just thought of a better word to describe to the noise the BOV I'm seeking made: "flutters". When it dumps, instead of a "whoosh" or whistle (which have a single tone), the noise flutters. I also recently saw the opening to a JDM PS2 Wangan Midnight game, and the main car (the "Devil Z") made the same noise. Maybe someone might be able to tell what it is now? http://www.paper-momo.com/hadesomega...anps2intro.avi

 

Prob no blow off valve ball bearing turbos dont need them, compressor surge my friend.

 

ya, i would bet no BOV that sound is part of the anti-lag system like on a wrc car. they have lots of money and can replace turbo every few races or every race it they want.

 

I'm guessing it's something that either goes pssht or vfrrt or ttsss.

 

wastegate?

 

^^^ damn you bat me to it. because of the anti-lag system, theres no BOV> the chirping is wastegate flutter.

 

Oooh, interesting. I never heard of that before about ball bearing turbos. So where does the pressure go when the throttle closes? When the pressure bounces off the throttle plate, what does the BB turbo do with it? I can visualize the turbo using the returning pressure to keep spinning, but wouldn't it be going the opposite direction?

 

someone correct me if im wrong but i believe it goes out the waste gate....which is compressor surge.

 

I always thought the wastegate was on the exhaust side of the turbine (to regulate how much it spins the intake side). So are you saying the pressurized air from the intake side is being vented through the wastegate somehow? Is that the unique design feature of the ball-bearing turbo that allows it to operate without a BOV?

 

You don't by any chance drive a silver prelude do you Heat?

 

Its an external wastegate. The wastegate is outside of the turbo housing unlike the internal wastegate on a WRX's stock turbo. The excess pressure can be relieved through the wastegate without going through the turbo.

 

ask Dan avoN7 haha

 

ding ding





side note:



https://www.i-club.com/forums/showth...light=anti+lag