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

Wiring Harness

Discussion in 'ECU's, Electronics, and Tuning' started by CRseX84, Sep 25, 2003.

  1. CRseX84

    CRseX84 Senior Member

    Messages:
    481
    Likes Received:
    0
    Joined:
    Sep 4, 2003
    Location:
    SUNY Canton College, NY.
    hey ok so im gona be swaping my 91 CRX DX wit a B18 LS motor. one of my boys said that i can use the CRX SI ECU and wiring harness and it will all plug in fine and fit great. is this true?? or what shuld i do for the harness?
     
  2. radnulb

    radnulb Senior Member

    Messages:
    674
    Likes Received:
    1
    Joined:
    Sep 23, 2003
    Location:
    Sinsinnaty, Ohio
    The CRX Si ECU (PM6) will run the car, but not run it well. Too little fuel - its designed for a 1.6L SOHC.

    The 90-91 PR4 ECU will run a B18 like honda intended it to be run, which is to say rather conservatively.

    The CRX Si ECU will run a B18 just as well as a PR4, if chipped. Additionally, program tweeks could potentially enhance performance *slightly*.


    The first rule of swaps that was taught to me was ALWAYS USE THE STOCK HARNESS, REWIRE WHAT YOU NEED TO.

    The DX to MPFI conversion is not that hard. I've only ever done the conversion, never swapped complete harnesses. It's not that difficult of a conversion. There is a decent writeup here: http://www.hondaswap.com/articles/viewer.php?id=7

    FWIW, I have a PR4 I'd probably trade you for a PM6. If you just wanted to chip your PM6, could probably do that too.
     
  3. CRseX84

    CRseX84 Senior Member

    Messages:
    481
    Likes Received:
    0
    Joined:
    Sep 4, 2003
    Location:
    SUNY Canton College, NY.
    so to when u said the rule u were taught was to use the stock harness, that harness would be the B18 LS harness and ecu? is that what ur talkn bout? or just use the dx harness and get a b18 ecu. now the PR4 ECU is from what engine/ car. and does my DX that i have now have the PM6 in it or is that just the SI. thanks for explain it to me this is my first swap, but i am at a auto college so i got my boys and all the equitment that is needed. for the swap its just understanging the diffrent ECUs and stuff. thanks bro
     
  4. MaaseyRacer

    MaaseyRacer Senior Member

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

    radnulb Senior Member

    Messages:
    674
    Likes Received:
    1
    Joined:
    Sep 23, 2003
    Location:
    Sinsinnaty, Ohio
    for clarity:
    PM6 came in 88-91 Si
    PR4 came in 90-1 and 92-93 LS/GS integra BUT the 92-93 is electrically incompatible with your car.

    "Use the stock harness" means use whatever harness matches the car. If you swap an engine, adapt the harness in the car to start with to work with the new motor.
     
Verification:
Draft saved Draft deleted

Share This Page