that motor and that ecu (p-28) doesn't run a knock sensor.
Your cabin harness should have all the wires already for vtec, you just need to run the wires to the plug by the firewall from the engine.

run to ecu pin
A4 vtec solenoid
A20 evap purge
A17 iab
and
D6 vtec pressure switch
that should be all for you to run.