positive crank case ventialtor - they are usually routed back into your intake BEFORE the turbo on Gt4's , im prety sure its similar on Mr2's
getr your self an oil vapor catch can - plumb a hose from that to it - then run a second line from catch can to intake tubing - this will help stop any oily residue getting thru your intercooler and gumming up things in your intake
theres a second vaccum hose that comes off from behind the motor - thats got to do with your idle control - it also needs to be plumbed in - i can show you which two i mean in a pic of my gt4;s engine bay if you like ( im sure i have a photo here somewhere of the pipes in question )