rex-leggy

hi there i have in the last mounth rebuilt my 96 gt wag . also in the prosess ive converted it to single turbo but there are two hoses that i do not no where they go. its in the very back left of the engine bay . its a valve or sumfin bt not sure . the hose numbers are 21 and 22 . any help would be appriated because id really like to start it tomoro haha ;D .