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

how to put in 99-00 SI ecu into a '97 civic ex

Discussion in 'General Tech and Maintenance' started by Arachnid, May 2, 2004.

  1. Arachnid

    Arachnid Senior Member

    Messages:
    211
    Likes Received:
    0
    Joined:
    Apr 11, 2004
    Sup yo, I'm trying to put in a 99-00 SI ecu into my '97 civic ex. From what i've read up so far, those 2 harness' (EX and SI ECUs) should just be the same right?not!! there are three plugs but only two from the SI ecu fits into the ex plugs. does that mean i have to get a harness for the 3rd plug? (sorry wrong board; now i don't know how to delete this...)
     
  2. t3t4si

    t3t4si Member

    Messages:
    81
    Likes Received:
    0
    Joined:
    May 28, 2003
    I have also been down your road all the ecu's. I have a 2000 si and its seems that the 99-00 civics are an OBD2b pt2 ecu where as the other years 96-98 are OBD2a the only difference is the ecu plugs. You can buy a harness to make it work from skunk 2 or www.jkobdconversionharness.com
     
Verification:
Draft saved Draft deleted

Share This Page