how do you know when it is a recirculatin BOV?? does it still go "psssshhff" or is that only atmospheric ones. and could one that goes "pssshhf" be made to recirc?? and what is the problem of getting a BOV that is atmospheric? does it hinder perfomance alot? i ahve been trying to search but nothing comes up. thanks alot and i dunno but i like the noise but if it hurts the cars then i guess it aint worth it.

but is there one that recircs and does the noise??

thanks agian!