ok i swaped a zc into my 90dx hatch back, i took the advice of a local garage owner who told me that if i swaped the 88-91 si wiring harnesses into it that the car would run off of those. the problem i ran into was that now i am told there is a difference between the 88-89 and the 90-91 is this true? if so how can i tell which one is which and how do i fix the problem? i am getting no spark or any pulse to the fuel pump. i am running it on a acura integra computer and i have tried it in an si and it works fine, so that is not the problem. if anyone knows anything about it, please let me know. thanks

 

Isnt the difference, MPFI & DPFI between the 2 EF's?

 

yes that is the big difference, what i am looking for is the difference between the two si wiring models, i switched it all to si wiring, but it still doesnt work, i dont know what year the wiring came out of because ididnt think it matterd, so i might have an engine harness from an 88 and a dash harness from a 91. i need to know how to tell that?

 

I dont think they are different as an 88-89 ECU will work in a 90-91 and vice versa

 

well then does anyone know what the problem might be?