hey my name is Devon and i have a '89 civic hatch w/ '91 engine harness running the motor. When i do the zc swap into my '89 hatch do i keep the '91 harness?
Thanks so much -Devon

 

Yup, aslong as it is MPFI

 

not post whoring but i always like multiple answers...i myself have a boosted dohc zc in a 91 hf, but yes as long as your harness in mpfi like radim said go ahead and use it.

 

Even if it isn't, you have to use your factory engine bay wiring harness, or switch out the entire harness to a SI harness.

There are writeups out there on how-to to the Dual port to Muti port conversion. Just add a couple wires, switch a couple at the ecu and add a SI resistor box for the 4 injectors..