don't tell Toyota that with their Black top 20v 4AGE.you cant use MAP on ITBs due to poor vac signal. I'm use there is an apha-N mode the 808 can run in, thats whats used when tuning ITBs
folks who run MAP and ITBs run a signal from each TB post butterfly to a 'plenum' of sorts which in turn feeds the MAP sensor.
and if MAP doesn't work tune via TPS ala the early shitty dribbletechs