i recently bought an 88 civic dx dpfi... i also bought a jdm d15b motor. so i already have a p28 ecu and the ecu harness adapter and i want to install this motor but not sure about the wiring of the 4 injectors and maybe a few sensors i have to wire but am not sure which ones.... this motor came with a cut harness so the plugs and wires a all there for me to splice but i need some help... thanks a bunch

a saw a few threads on converting just dpfi to mpfi but non that explained going obd1 ... thank you

 

http://www.rywire.com
There's too much to explain checkout that page, it gives you some idea of what we do.
Before you start cutting up your harness, think about spending $175 on us doing the MPFI conversion with the VTEC wiring run for you. There are actually only 6 solders (cuts) in our entire wiring job for that engine. You can de-pin most of those plugs.

 

ive seen alot of people do it themselves... so i was wondering if anyone had a diagram of some sort. ive already spent spent enough on this little car...

 

If you would like to do it yourself, simply search for dpfi to mpfi swap. Good luck.
Ryan