This what I have:

90 CRX SI with 94 GSR engine just installed...the engine has been converted to OBD-0 and will be runing a PR3 ECU.....do I wire it just like I would a OBD-0 B16 swap?(vtec, knock, and oil pressure) Or do I need to do somthing different? Feel free to ask my question or to clerify.

 

why are you running it obd0?

 

because the car is OBD-0 and the engine was already converted to OBD-0 by the previous owner.

 

You wire it just like a OBD0 B16.

If you are using an OEM GSR intake manifold, you will need to unhook the vacuum line to secondary butterflies so they are always open.
If you are running an aftermarket manifold, you're set.

 

i did the same thing. run an aftermarket IM and the PR3 requires 2 o2 sensors or you can get it chipped to run 1

 

Man I did the same thing. I really wouldnt reccoment it unless possibly getting it chipped, Thats an expensive engine to not be getting the correct fuel and timing, Not to mention those crappy butterflys...

Minium I would get an aftermarket intake mani and get that pr3 chipped and tuned, I had the butterflys running off my tach so i could adjust when they open and close... Also Ran it on a stock pr3, What a pain in the *** it was! And Im sure my rings didnt like me much either.

Just save up and convert to obd 1 you will be 100x Happier with the motor

Just my 2 cents Gl

 

This local guy had a obd0 gsr... I converted to obd1, and he wanted to hug me from the drivers seat

my 2 cents

 

I plan to convert BACK to OBD-1 soon....I just want to get the car moving at this point......as far as the IM....it's aftermarket I'll wire everything up and when I find the ECU I'll rewire what I have to.