What makes this sound on a car when it is accelerating?

What is the part that is installed on a car that makes the sound at the 28,30,33 second marks in this video http://www.youtube.com/watch?v=3R3U1mplloM&feature=related

2009-08-29T00:28:14Z

What is the point of this part, how much is it to install and can you put it on any car or just turbocharged?

Ken2009-08-29T04:00:03Z

Favorite Answer

That's the sound of a BOV (possibly the HKS SSQV). Your car must be turbocharged to have a BOV.

?2009-08-29T00:33:14Z

Turbo Purging also known as nitrous purge, you'll have to get an expensive nitrous system in order to have that psst sound, should cost around 1500 - 3000 depending on the make of your car...

D1Chung вαиgѕ☮2009-08-29T01:00:55Z

its the valve that u hear. well mostly...its for gas engione cars. hybrid cas that run on electricity are quiet and dont have this sound. all gas engine cars have this. ....

MERLIN2009-08-29T01:07:35Z

its called a dump valve in uk