Quick ECU question. 173 to 153.

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  • kid325e
    R3V OG
    • Sep 2007
    • 6421
    #1

    Quick ECU question. 173 to 153.

    I pulled a Dinan chipped ECU out of an 88 iX. It's a 153. My iX is a 91 so i'm assuming it's got a 173 ECU.

    Will I have any problems running the chipped 153 ECU in place of the 173? I did some searching and found information on upgrading but never going backwards. Thanks in advance guys.
    clutchCTRL!
    Move with a purpose.
    - 1991 325iX 4dr/5spd
    - 1976 2002 SlickTop/2.7i M20/G260
    - 2000 323i AT
    2016 Mazda CX3 Sport AWD
    Tags: None
    • kid325e
      R3V OG
      • Sep 2007
      • 6421
      #2
      Anyone?

      Sent from my LG-P999 using Tapatalk
      clutchCTRL!
      Move with a purpose.
      - 1991 325iX 4dr/5spd
      - 1976 2002 SlickTop/2.7i M20/G260
      - 2000 323i AT
      2016 Mazda CX3 Sport AWD

        Comment

        • jlevie
          R3V OG
          • Nov 2006
          • 13530
          #3
          From the 153 on, the DME's are interchangeable.
          The car makes it possible, but the driver makes it happen.
          Jim Levie, Huntsville, AL

            Comment

            • reelizmpro
              R3V OG
              • Dec 2003
              • 9446
              #4
              You can do it but it would be a downgrade from Motronic 1.3 (single board) to Motronic 1.1 (dual board). If you feel the chip is worth it then go for it.
              "I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

              85 323i M TECH 1 S52 - ALPINEWEISS/SCHWARZE
              88 M3 - LACHSSILBER/SCHWARZE
              89 M3 - ALPINEWEISS II/M TECH CLOTH-ALCANTARA
              91 M TECHNIC CABRIO TURBO - MACAOBLAU/M TECH CLOTH-LEATHER

                Comment

                • jlevie
                  R3V OG
                  • Nov 2006
                  • 13530
                  #5
                  The only real differences that matter are that idle control is better and the stomp test works in a 173 or later.
                  The car makes it possible, but the driver makes it happen.
                  Jim Levie, Huntsville, AL

                    Comment

                    • kid325e
                      R3V OG
                      • Sep 2007
                      • 6421
                      #6
                      Thanks guys. I figured so but just needed a second (or third) opinion. Going to put it in this evening as well as an mtech 1 wheel!

                      Sent from my LG-P999 using Tapatalk
                      clutchCTRL!
                      Move with a purpose.
                      - 1991 325iX 4dr/5spd
                      - 1976 2002 SlickTop/2.7i M20/G260
                      - 2000 323i AT
                      2016 Mazda CX3 Sport AWD

                        Comment

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