Wherever the hell you get your information from it's just plain wrong. First of all there are no differences between any PR3, they may have a different seriel number but they tell the car the same thing. And the PW0 came in the 88-89 SiR in Japan. Also the PW0 did not come in the Integra XSi because I have that car, and it has the PR3 which I took a picture of (See up above). I have no idea who made you a moderator but you should really start doing your homework big boy. How old are you again?njn63 said:# PR3 : 89-91 JDM B16A EF8/9
# PR3 -J00 or J51 : 92 JDM Integra B16A EF8/9
# PW0 : 89-91 JDM B16A EF8/9 DA6-XSi
They're all from Japan. I'm pretty sure there wasn't even an obd0 b-series vtec in the US.