The V8 Owners Forum -

i have an omvl twin vapouriser, the one thats supposed to be the mutts nuts, it appears to have two gas ports to the carbs, one of which is capped off with a rubber bung.
can i use both these ports? i have a boxer inlet with 4 s.u.s, so i am hoping each port will supply 2 s.u.s.
any one else tried to gas 4 s.u.s?

You can use both outlets. This is usually only done on large capacity engines though.

You may find that setting the mixture correctly is far more difficult.