i'd like to know on my b18b, on the intake manafold just left to the evap purge control solenoid valve thing theres a hose that goes from the intake manafold to the fire wall, i dont have a dig cam, and i've searched my helms but it doesnt say, or i cant find it, i'd just like to know what it is and what it does. thanks

 

i think i've found what your talkin about its on page 6-17 and its called a brake booster vacuum hose

 

yeah that it, thanks. what does it do? boost my braking?