Newbie_Scooby

i currently have a blitz vta dv on but doesnt make much noise :S so swapped it with my forge dv vta but makes exactly the same noise not much of a psssssssssh its just kinda i dunno how to explain the noise but not what i know the forge can do.

i have a pic of how i installed it, is it correctly fitted? is there anything else i need to do. ive heard of blocking pipes off but dunno with one?
and also the dv is open on idle im sure it never used to be on my punto turbo :S