ok theres 3 small tubes right on the manifold next to the throttle body and the first on goes into the intake and the third one goes to the evap canister i think but i dont know where the middle one goes. i got a 97 prelude with a h22a4 5 speed. i got the throttle body changed and i got a check engine light P1459. i noticed the middle tube was disconnected and i have no idea where its suppose to go. anyone please help. thanks

 

This thread has an obd1 and obd2 vacuum diagram. If it is the one I think it is then it gets plugged. https://honda-tech.com/zerothread/650329