VTA = vent to atmosphere, don't use cans with a breather filter on it. If you want a boost ready can, look up Saikou Michi. Completely sealed, welded together with just the bungs for inlet and outlet and a drain. The inlet and outlets can be speced for size and angle. Go take a look, good stuff. Apparently the F150 forums had a manufacturer test it against their system and found it next best at smth like 95%+ efficient. (Their setup is kinda complicated but get like 99% or something.)