all depends what box you use tho
with the evo hks box it was not that loud but now have a hks hi power one should sound bit louder, all about screamers tho
seen your box looked fairly big, but that might just be the way the pics where taken
what types of turbo are yall using?
you'll get zero back pressure with a system like that, witch will obviously be a good thing
its not a good thing, you still need some back pressure for off boost driving. otherwise it will be very flat low down