Dump valve doesnt sound right

[gunmetalgtir]

I've got a hks ssqv and when I was out on my lunch break there my dump valve sounded totally different from normal! :shock: Normally makes a high pitched noise, but when I was changing gear it sounded totally different! (happend all the way back to my work, and the car seemed to be boosting fine.) Could JUST hear it dump, but the noise was nothing like what it normally is! Anyone got any ideas what could be causing it?

 

[antgtir]

Just check all the hoses / connections, make sure the bolt that screws in on the top of the BOV is still there to lol :shock:

Ant.

 

[alfyboy]

same thing happened to mine, turned out the small vacum hose on the dump valve was kinked, straightened it out and it was fine