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

NEed help with some b18a1 wiring

Discussion in 'HYBRID -> ED-EF / DA' started by tekno9998, Feb 23, 2004.

  1. tekno9998

    tekno9998 Junior Member

    Messages:
    10
    Likes Received:
    0
    Joined:
    May 12, 2003
    I have a 91 civic dx standard and traded my old civic for a complete b18a1 civic swap or so i thought. The swap came with the pr4 ecu and the mpfi wiring done to the engine harness and the b18a1 of course the engine is already in but it doesnt plug up to the harness coming thru the firewall while the ecu plugs right in. Im lost and i cant seem to find anyone that knows about this swap do i just need a 91 civic si wiring harness to plug up to the ecu and go thru the firewall? Thanx for any responses im stumped


    Phil
     
  2. hammerdgolfer

    hammerdgolfer Senior Member

    Messages:
    275
    Likes Received:
    0
    Joined:
    Nov 21, 2003
    the harness you probably have is the same as the si, you just need the si resistor box to convert it from dpfi to mpfi
     
  3. tekno9998

    tekno9998 Junior Member

    Messages:
    10
    Likes Received:
    0
    Joined:
    May 12, 2003
    The dpfi is already done with the resistor box wired in
     
  4. Jeef

    Jeef NO MA'AM Moderator VIP

    Messages:
    7,152
    Likes Received:
    294
    Joined:
    Sep 29, 2002
    Location:
    CT
    DPFI does not have a resistor box. Just because the ecu fits doesn't mean its the same. You need to do an mpfi swap. There are instructions on here and all over the net on how to do it. You can not just simply put an si wiring harness on it and expect it to work. If you did that you would have to change some wires by the ecu plug.
     
  5. tekno9998

    tekno9998 Junior Member

    Messages:
    10
    Likes Received:
    0
    Joined:
    May 12, 2003
    So i will have to modify the wiring harness to the ecu right? The egine wiring harness is allready wired its just the plug comin off the resistor box does not match up with the plug comin from the firewall. So a si harness from the ecu will not fix the problem?
     
  6. spdr

    spdr Member

    Messages:
    89
    Likes Received:
    0
    Joined:
    Oct 21, 2003
    If you mean that you are trying to wire the b18a1 engine harness up to the dx wiring harness this will not work, as mentioned before you need to do the dpfi to mpfi rewire and you also need a d series si ENGINE wiring harness....
     
Verification:
Draft saved Draft deleted

Share This Page