can someone tell me the one i need for my rst i have no amal valve and ther is not one fitted and i want one a.s.a.p before it causes any problems

do i need a three port or a two

if i use one of these (pic below) dose the third pipe go to the metering unit as ther is a pipe blocked off ther



or do i just use one of these (pic below) inbetween actuator and the turbo unit