i have a 93 civic with a b18b1 can i use a pr4 from a 92-93 acura integra or is it deiffrent

 

You have 2 choices:

- pr4

-94-95 Integra P75

 

PR4s are '90 - '91 only and OBD0. '92 - '93 USDM Integras (except the GS-R) used the OBD1 P74 (which you can use) or like Deetz said an OBD1 P75 from a '94 - '95 Integra.

 

^^^ Not correct exactly. The 92-93 Integra RS/LS/GS are ALL PR4 obdI ecu's. Oh yeah, i am personally running one in my 1996 Civic hatch with OBDI conversion running a B20Z

 

Oh, and the 92-93 GSR uses a P61 btw

vtec ecu

 

Pics of the ECU code? I've got a list here that says otherwise. I don't see that many OBD1 DA Integras (almost none actually)

I knew that.

 

90-91 integra's obd0 pr4
92-93 integra's obd1 pr4
94-95 integra's obd1 p75

 

http://www.team-integra.net/sections...?ArticleID=691

 

ALL 92-93 Integra's were OBDI. Every one i've pulled from those years myself had a PR4 ecu in it, on non gsr models

 

Your list is contradictory. P74/P75 is listed as '92 - '95 GS/LS. PR4 is listed as '90 - '93 LS/GS. Theres some overlap in there.

 

^ correct. My 93 DA was a PR4 OBD1. I know for a fact because I bought a shell that was a 91 and it was OBD0 and I went through hell trying to find that ecu because all I had was the OBD1. I ended up buying a conversion harness.

 

OK...thought we had this cleared up....

90-91 had a PR4 OBD0 ecu

then in 92-93 all Honda/Acura's went to OBDI, non vtec ecu was still called a PR4

In 94, here in Canada at least, they were changed to P75, i pull one of these also. To date i have never seen a P74, but i don't doubt there is one

My info is 100%, i work for Acura and deal with this stuff all the time!

 

Thank you. I knew the DA integras switched from a OBD0 to OBD1 in '92. When I said I don't see many OBD1 DA Integras I probably should have clarified that a little further. I actually hardly see any DA Integras. Most of them have been junked at this point, the New Brunswick salt does quite a number on quarter panels and rockers. The list of ECU codes I have came from D-series.org, I think, i've had it for years. Its entirely possible theres an error in it (almost definately based on your info)