ECU Upgrade question

never2low · Post by **never2low** » Fri Jan 07, 2005 8:14 pm

i have a 1991 Integra GS with a PR4 OBD0 ECU. To upgrade to and P75 OBD1 ECU will i have to change in plugs or will it just plug in to my harness?

ice-burg-slimm · Post by **ice-burg-slimm** » Mon Jan 10, 2005 5:31 am

The PR4 is from a 92-93 LS/GS so it's classified as OBD1.
The P75 is also OBD1 from a 95 LS/GS,so every thing should be plug and play.

RMS · Post by **RMS** » Tue Jan 11, 2005 11:36 pm

pr4 is obd0 for '90-1. pr4 is obd1 for '92-3. you will require an adapter harness, dizzy, and 4-wire o2 to convert to obdI. OR one of our obdI ecus with the obd0 plugs installed into it.