Okay well i have a obd1 gsr swap into a obd2 civic. The porblem is that the evap canister only has two fittings. One goes to the fuel line in the fire wall and the other one gos to the evap purge control. since civics have only two fittings on the canister i am wondering where does the gold fitting on top of the throttle body right by the map sensor go to?

 

the fitting on the obd1 tb is the venturi port for the vent on the obd1 canister.

the 3 ports on the obd1 canister are for the firewall, the switching valve, and the canister vent to burn fumes.

on the obd2 setup, the switching valve and the vent valve, i know i am mangling the correct terms, are 1 as they are both part of the vacuum switching valve.