Help Identifying BOV

[Elbow]

http://youtube.com/watch?v=UsMQRRVPmDw

Is the whistling sound a BOV? What type can it be compared to? Do want. :crazy:

[Elbow]

...or is it compressor surge?

[Elbow]

So technically I would get this sound by using no BOV at all....lol

[japan4racing]

ther is most def a bypass valve....but it sounds like more compressor surge than anything

[-S Double C-]

sounds good to me LMAO!