I have a 90 civic hatch DX, 1.5 liter non vtec, I swapped this out to a SOHC vtec 1.6 liter. I used a 91 Si wiring harness and a 91 Si computer, but didnt change the inside wiring harness. Does anyone know what wires i need to change at the ECU to make this work?

Any information would greatly be appreciated.

Thanks

 

Use your DX harness and modify it. Its easier to do that than to use the Si harness.

http://fourthgenhatch.com/mpfi.html

I used this site when I did my swap.
Good luck!

 

thank u for all your info .ill work on the car tonight and ill let you know what the results are tomorrow.thanks again

 

good luck... its not very hard.

 

i did everything the diagrams told me to do but the car will not start ... if there is anything else i have to do please let me know...this car is starting to **** me off!!!!

 

are you doing a dual point to multi point or a z6 swap?

 

dual point to multipoint... I had a 1.5 non v-tec and swapped it out with a 1.6 sohc v-tec zc and i need help with the wiring at the ecu... Please help me!!!!!

 

Is it cranking at least? Do you have spark? fuel?

 

i really dont understand it i have spark and fuel and it cranks i really dont understand why its not starting!!if u have anymore diagrams it would be greatly appreciated... Thanks

 

check your plugs and stuff, maybe its flooded. double check your plug wires and rotor position.

 

Put a timing light on it and get someone else to crank it over.. You might have the 2 blue wires reversed when you wired up the dizzy and that will throw you ignition timing wayyyyyy out..