wastegate hook up
The top port you leave vented unless using a boost controler.
If using a boost controler you hook the top port up to a tee off the line from the bottom port and regulate the pressure to the top.
don't just tee the pressure feed to the side port and feed it to the top of the gate. You won't regulate anything then, and end up buying pistons

You feed the boost controller with the same pressure source at you fed to the side port on the gate. Then the output of the controller goes to the top of the gate, assuming the controller is setup to run a dual port external gate.
something like this

http://tialsport.com/documents/w3_tial_wginstall.pdf



