I've been on google all day, saw countless swaps broken down from a parts perspective but but nothing explaining what exactly is the modification needed to the dx harness to make it work fot the zc? Is it the dpi to mpfi conversion?

Secondly, if i use a Si engine harness, do I have to change the interior harness as well to si?

These are the two details I'm lost on, any help would be appreciated.

 

use the dx engine harness if your car is a dx and oem interior harness, just add wires for mpfi check the faq at the top of the page

http://www.angelfire.com/d20/hcivic88/dx-siwiring.html

 

I did this to my 90 Std. Oem interior harness is the way to go with modifying the dx harness. Don't waste your time with the SI harness, I bought one and was a total waste once I realised it. Half the DIY's state ECU coding wrong so double check with Helm's manual a million times on everything otherwise you could end up with a no start. Autozone.com has a great pdf on every model for wiring diagrams for honda's. Go there and make an account/sign in.

PS Yes DPFI to MPFI

 

Bet, if its dpi to mpfi only then its a cake walk, and im going in on it now. Thanks guys.

 

if you are swapping in a DOHC ZC, use this:

 

oyesssss
very useful

 

Ifffff you're swapping in a DOHC ZC you need to talk to me cause I have the block that you need!!!

 

alright honda master...

 

No you need to talk to me cause I have a darton sleeved DOHC ZC block that i'm not using.....

 

Trade you an H22 Type S Bare Block for it.