from what i read, this only helps with stalling at idle. which is half of the problem we have. if you rev high and then shift to neutral, i'm not sure if you would stall or not....but i guess if you're idling at 1500 rpm, you're not gonna stall so easily. but who wants their car idling that high?
that's half of the problem anyway. the other half, as supman discovered is that by venting, you're still getting a rich condition......very rich...so you may bog down in between shifts. unless you get a fuel controller that will pull fuel when your bov opens, there's no complete fix for it.
personally, i'd still recirculate because: (1) this car was designed from the factory to recirculate. so why not recirculate? (2) i don't want my car idling that high.
now even though you'll still probably encounter some slight compressor surge from recirculating (i'm almost positive that's what the turkey is now, caused by the return tube not being large enough, stock or injen), your car will still run better if you recirculate. until you get a fuel controller, i wouldn't vent. why risk a potentially dangerous stall?
yes, there are bovs that you can recirculate and get the nice psshhh sound. 935motorsports has offered to design me a recirculation fitting for the blitz dd bov. if you've ever seen getaway in stockholm 2, the bov you hear is the blitz. the hks recirculated also gives a whoosh sound, distinctly different from the blitz. the hks gives a flat pshhh sound whereas the blitz has a slight pitch change/whistle to it. visit
www.blowoffvalves.com to hear sound clips of different bovs. to hear the hks ssqv recirculated, visit
http://www.collectracecars.com/evo/hks_ssqv.htm
turbo xs valves also give a psshh sound and turbo xs does sell true bpvs. i've never heard one of their bpvs but i imagine they will sound very similar to their bovs.
those are probably your best options.