so i just did the MPFI swap on mmy 91 dx hatch, d15b1
and there is a orange and blue with a white connenctor i dont know where it goes,
and EACV holes, where do the hoses go,
if anyone has a vacuum diagram or can take pictures of they're setup
i'd be very gratefull, i've had it apart for about 3 days now finnaly got codes gone,
now just vacuum, taking my time to do it right,
please help asap!

 

dont know if this will help. . .this is what i will be using as a guide

http://www.50mod.com/fourthgenhatch/mpfi.html

 

this is the one i used as a guide, its pretty straight forward, i just looked at all the plugs and stuff, and its correct,
umm.. but about the wiring of the injectors,
yellow black to yellow black,
yellow to injector one
red to injector 3,
BUT my resistor box does not have a yellow black in the box,
it has 4 blacks and a red???
so wire my yellow blacks to the red?

 

the extra plug you have is for the tandom valve on teh dual point set up the multi port dosn't use it so you can just cut it off or tapeit to the harness. As for your injector wiring the the 2 yellow and blacks from the old injectors goes to the red on your resistor box. The the blacks go to the new injectors one for each injector. The the brown wire from the old injectors goes to the new injector #1 and the blue wire from the old injectors goes to injector number 3.

 

Oh and the hoses on the EACV Arent vacume hoses they are coolent hoses one goes to the throttle body the other goes to the hard coolent tube comming from the thrmostat housing.