Idle problems just swapped

Ok.. I just swapped my civic with the same dx motor ok everything look the same... But I've been getting a odd idle RPMS go up and down and I have search found a couple things but heres where mine is different. ok on a dx intake manifold there are i believe 3 vacuum hoses I have four?!?!?!?!? There is a extra one on the far right of the manifold and there is no place for it to go.. I think it may be my IAC valve sensor but... I took the one off my old motor and the problem was persisting the CEL is on and my code is p0505 i think but it said idle air controll valve malfucntion of something... Help ME im gonna go take a pic of the extra vac O and also I am having a delayed throttle response. Is my Motor A JDM D16y7 .... Not likly but... Whos knows I need to find the VIN on the motor where do i look also?


http://www.geocities.com/nfgrabbit/1.jpg


http://www.geocities.com/nfgrabbit/2.jpeg



Links
http://www.geocities.com/nfgrabbit/1.jpg

http://www.geocities.com/nfgrabbit/2.jpeg

oy, we told you, you should have let us swap it in man! As for your problem with the iac valve, no clue man. just wanted to post so you could get my id. later.