how long you had the laser and what model and engine is it please
its antipollution stuff to me ...now maybe disconnected
you need a vacuum layout/diagram .. for the Laser ..I dont have that
by the picture ,there looks like there was once a hose on there, to the outlet bit of the black thingy
needs the thinnest vac hose
the other hose above is thicker ?
has that filled in bit of outlet pipe on the plenum meant to be blocked off
