I have a 2000 Honda Civic with a GS-R engine swap and one of the hoses on the Evap isn’t connected anywhere anyone know where it goes? It’s a 98 Integra

 

It normally goes to a vacuum port found at the 12 o'clock position on the throttle body. Unfortunately, the '98 Integra isn't plumbed that way, so you need a '94-95 Integra or aftermarket equivalent and your charcoal vapor cannister will now be properly vented.