dose anybody make a conversion harness to wire my car to run the 93 civic si ecu for vtec and mpfi so i dont have to change any wiring??
by the way its a 88 crx dx

 

its going to be a bitch to change from OBDO to OBDI
in my opinion. do like i did
get a 88-89 Integra ECU
4G civic or CRX Si distribuitor
inyector resistor
DPFI to MPFI conversion
and u are good to go.... the fuel map on the DOHC PG6 ecu its better than the 4G Si wich u can use also.....

 

you forgot an aftermarket VTEC controller (rpm activated switch)

 

so if i get a after market vtec controller do i need the rpm switch and how hard are they to get up and running?

 

You won't see too much of a benefit running a non-vtec computer on a sohc vtec, but maybe I'm just biased because I converted to OBD-I. Seriously dude, it's not that hard. I built my own converter harness, and I have the complete guide to converting 88-91 Si and Dx to OBD-I. IM me if you need it. As for people who make the harness, Blown90Hatch does, I believe. And I've heard Kenji does as well.