ok i have a 89 crx and im swaping in a d15b obd1 and i was told to use the si harness from a mpfi crx now my question is what do i need to rewire i know i would have too wire up vtec and the distributer but what els wold i have to do

 

search and look at the FAQs... answers are there

 

ii dont know how it works

 

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/

 

how did u find it so fast

 

its at the top of the forum bud

 

dam that confused me now thr thing is i have three plugs left over

 

What plugs are they? Did you figure out what to do with your resistor box or are you using the injectors from your old motor? If using new injectors, just cut all the wires from the resistor and twist/solder all 5 wires together.

 

you will have these three left over, just tuck them away

 

i do have the injectorrs that came with the motor i dont know if i should leave them and i didnt know what to do with the resistor box and these are the connectors that i have left that i dont know where they go[IMG][/IMG]

[IMG][/IMG]

 

what i really just need to know what do i need to do to the harness to get the motor running i thought i didnt need the resistor box but damm i dont know as u can tell im a noob so help me out

 

you do need the box if you're using peak/hold type obd0 injectors.

the way you worded your first post leads me to believe your car was not mpfi to begin with. if that's the case then you need to get the appropriate harness and convert it to mpfi. unless by chance your car is an hf in which case it would be mpfi already.

so if you are using the si harness, and your car is not an si, then it's not going to work.

 

well my car isnt mpfi but i bought the si mpfi harness and i tried hooking it up but some connectors dont reach and some are diffrent and the injectors are obd1 inectors

 

you can't use that harness, sorry. you need to get your stock dpfi harness and convert it to mpfi, which includes running a few wires into the cabin. its done this way because those same wires are not present in your stock dpfi cabin harness, which is why just plugging in a si harness will not work.

obd1 injectors don't use a resistor box, so go ahead and delete it.

 

well i guess i need to buy the dpfi harness cuss i bought the shell and then i was told to use the mpfi si crx harness i guess i got some wrong info so what kinda wires will i need to run to the cabin

 

check it

http://hondaswap.com/swap-articles/d...writeup-49557/