1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

PJ0 (pre-OBD?) to OBD1 conversion

Discussion in 'ECU's, Electronics, and Tuning' started by Sabz5150, Nov 17, 2003.

  1. Sabz5150

    Sabz5150 FALCON PUNCH!!!

    Messages:
    3,335
    Likes Received:
    41
    Joined:
    Nov 17, 2003
    I'm trying to make this magic work, but haven't been able to find any helpful information to move me along on it. I've got a few qn's that hopefully you guys/girls can help me out with...

    Will I need to bypass the injector resistor box, swap in a Teg's or can I work with what I have?

    Pinouts, pinouts, pinouts... does anyone have a diagram of how to build an obd0 to obd1 harness? That would be the biggest help, but I can't find one anywhere :(

    What's the best ECU to use for this? The engine is a BT/A20A3 EFI 12V SOHC.

    Any help would be appreciated B)
     
  2. MaaseyRacer

    MaaseyRacer Senior Member

    Messages:
    2,980
    Likes Received:
    0
    Joined:
    Sep 29, 2002
    Location:
    San Francisco, Ca.
  3. radnulb

    radnulb Senior Member

    Messages:
    674
    Likes Received:
    1
    Joined:
    Sep 23, 2003
    Location:
    Sinsinnaty, Ohio
    actually, No.

    You didn't read his post. he has a vacuum advance A20A3 motor. The harness you linked to is for electronic advance cars.

    You're going to need a Helms for your car if you don't already have one.
    Sonny Van Hook and TJ both have excellent writeups of converting a vacuum advance 1G CRX to electronic advance / "OBD0". From there, you need to use your noggin if you want to convert to OBD1. I'd recommend using PhiZ's OBD0-OBD1 conversion strategy, which he was kind enough to document in the Harnesses and Conversions forum at PGMFI.org.

    Good fucking luck. This is a hard conversion. I'm converting my 87Si to OBD1 this winter, and I expect to kill the car before it's done. :)
     
  4. Sabz5150

    Sabz5150 FALCON PUNCH!!!

    Messages:
    3,335
    Likes Received:
    41
    Joined:
    Nov 17, 2003
    Thanks :)

    It's been done, the brother of a member on our board pulled it off. Said he used an F22 dizzy and an ECU conversion harness. He hasn't given any other info than that. Here's a pic of the dizzy mated to the A20. (sorry it's so huge)

    [​IMG]

    I'm gonna keep searching for the harness pinouts and see what I can get going. If I get somewhere, I'll definitely share my info :)
     
Verification:
Draft saved Draft deleted

Share This Page