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91 integra wiring to PR3 ecu(obd-0)

Discussion in 'ECU's, Electronics, and Tuning' started by cycloneb18c3, Feb 24, 2004.

  1. cycloneb18c3

    cycloneb18c3 Senior Member

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    Ok I have a 91 integra with a b16 swap. Im wiring my car for vtec into a pr3 ecu. and Im a lil confused...
    here it goes
    PIN B19 on the stock PR4 is a p/s pressure switch, the PR3 Requires this to be the knock sensor. Do I just take the p/s pressure switch wire and replace it with the knock sensor wire? and re pin the p/s pressure switch to pin C9 on the PR3?

    For the 02 sensor wiring-Ive heard to run the ecu you need 2 o2 sensors. I got a pinout for a PR3 and it only shows 1 o2 sensor. Most people say to wire vtec you have to run the 2 o2 sensors. for the first one I run the wire to pin C8. My car stock only has 1 o2 sensor. IF there is a second o2 sensor needed which pin does it go to, and could I split my o2 sensor wire into 2 and run one to c8 and one to what ever pin it might be? Sorry if its confusing, I cant really explain it any better.

    for the vtec pressure switch there is 2 pins for the plug on the head. 1 of them goes to the ecu. where does the other go? Other that Im good to go.
    thanks in advance for your help
    Dan
     
  2. cycloneb18c3

    cycloneb18c3 Senior Member

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    anyone know anything about this?
     
  3. pills_PMD

    pills_PMD Super Moderator

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  4. cycloneb18c3

    cycloneb18c3 Senior Member

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    Ok, I just went to wire all of this stuff up(found my answer on Hasports VTEC sub harness diagram and hondata).look at this:
    http://www.hondata.com/techwiringpw0.html
    and-
    http://www.hasport.com/Tech/Wring/EFSi-VTEC.PDF
    and now Im VERY confused. I looked at the pinouts and it says pin b20(a brown wire for timing) on the sheet is right below b19 on the left side of the tab thing. on
    my car the brown wire is in the bottom right hand corner(where #2 is on the pinout diagrams on them websites). I looked at the apexi website on the vafc manual for the pinouts for the 88-91 civic sir(japan) and its showing the vtec solenoid is supposed to be in A plug, 4th wire from left on top row(while the hondata and hasport pinouts are showing it in the exact opposite(bottom row 4th from right) HELP!!!!!!!!
     
  5. Oscar112709

    Oscar112709 New Member

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    Wake the dead: up did you get this solved? Am having issues my self
     
  6. dilbeckskate

    dilbeckskate infamous

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    This post is 12 yrs old
     
  7. Oscar112709

    Oscar112709 New Member

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    Yo I know but every time I look for something I can't find it but when I don't need it is there....and I'm in need of help
     
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