Mark D chip install fail

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  • actionpod
    Member
    • Dec 2010
    • 61
    #1

    Mark D chip install fail

    So installed the Mark D chip out of an anti ESD bag, wearing a grounding strap, proper installation, etc. Key in on position, gross clicking sound- kind of like a quiet tazer or something to that effect. Back to on, clicking off. No start, but cranks. Reinstalled OEM chip and she runs beautifully again- so round two I did a really really slow install, just to see if I screwed something up. Identical symptoms, reinstalled OEM, runs great.

    I'm glad im still running fine- but I'd love my chip to work. Anyone had this problem? Do I have a fried chip?
    1988 325iX
    Protection? From who, "ze Germans?"
    Tags: None
    • BrewCity11
      R3VLimited
      • Mar 2008
      • 2335
      #2
      Checklist.
      -what ECU is the Chip for?

      -What ECu did you put it in

      -did you install backwards?

      -where did you buy the chip from?
      turk@gutenparts.com

      Originally posted by Janderson
      Properly placed zip ties will hold bridges together.

        Comment

        • actionpod
          Member
          • Dec 2010
          • 61
          #3
          Originally posted by BrewCity11
          Checklist.
          -what ECU is the Chip for?
          -Product e30 173.6k9-9114 (91 octane, 14# injectors, DME 0 261 200 173)
          -What ECu did you put it in
          -Do I need to pull a number off the ecu or is 1988 325iX enough information?
          -did you install backwards?
          -This was one of the more "underlined" notes in the DIY I read, so I think I did it right. Not backwards if the notches are supposed to face the same direction. I checked before, checked after, and the notch in the direction it is is working with the OEM chip.
          -where did you buy the chip from?
          -came with my car, from a reputable gentleman, to my knowledge never installed.


          Was I supposed to plug it in and wait 30 minutes for it to sync with everything? I waited 5 after hooking the battery back up the second time I attempted the install, but no dice.
          1988 325iX
          Protection? From who, "ze Germans?"

            Comment

            • nando
              Moderator
              • Nov 2003
              • 34827
              #4
              it's likely the '88 ix has a 153 ECU. AFAIK, there's no chip for those - and while I think it physically plugs in, you can't use a 1.3 chip in a 1.1 ecu.

              so yes, you need to read the # on the ecu. if it ends in 153, you need to find a 173 - they cost about $40.

              no you don't have to wait.
              Build thread

              Bimmerlabs

                Comment

                • actionpod
                  Member
                  • Dec 2010
                  • 61
                  #5
                  Originally posted by nando
                  it's likely the '88 ix has a 153 ECU. AFAIK, there's no chip for those - and while I think it physically plugs in, you can't use a 1.3 chip in a 1.1 ecu.

                  so yes, you need to read the # on the ecu. if it ends in 153, you need to find a 173 - they cost about $40.

                  no you don't have to wait.
                  I will check on this. Thank you very much for the prompt help guys!
                  1988 325iX
                  Protection? From who, "ze Germans?"

                    Comment

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