How Important Is ...

well the fuel pressure regulator is connected to the fuel rail, but then the vacuum line of it goes to the black box (IAB Vacuum Tank) … his fpr vacuum line is just dangaling(sp?). focusinprogress tried to hook it directly to the im, but it made the car idle SUPER low …

EDIT: here is a picture of what I am talking about …

http://i4.photobucket.com/albums/y125/95AccordVtec/FPR.jpg