I bought a 90 Crx si with a complete b16A swap in it dirt cheap . The car was driven and parked at my buddys body shop over a year ago and has never been started since . I found it has a bad computer in it. my question is which one should I get a PW0 or a PR3 it had a chipped PW0 in it . Im not planning on doin any upgrades to the engine as of yet . so basically as far as I know its just a factory b16a with no mods. I just didnt know what the difference was between the two ECU's and what cars they came out of ive been doin searches on HT but havent found anything helpful yet. As of right now im just gonna take the entire swap out of the rex and put it in my 91 hatch and keep it OBD0 and maybe later if I get extra cash and feel like making it faster Ill look into doin the OBD0 to OBD1 conversion. Plz dont slam me im a newb when it comes to honda performance.

 

got one for sale b16 pwo

http://www.hondamarketplace.co...59407

 

The difference is that the pr3 ecu is for obd1 b16s

 

If im not mistaking there seems to be two pr3 computers one is obd0 and one is obd1