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Difference Between Red and Green Label 071 ECUs?

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  • Difference Between Red and Green Label 071 ECUs?

    I am in the process of purchasing a new ECU/DME for my car and just want clarification before making the purchase. I have a green label 071 ecu in my car, and the seller has a red label ecu. He believes the only difference is the part# of the chip inside the ecu. I just want to make sure before moving forward. I tried searching, but came up empty. Any help is welcome.

  • #2

    ECU # Chip # Application (guess)
    087 1267355787 320is
    071 1267355168 Red 071
    071 1267355303 195
    071 1267355316 US 071
    071 1267355785 Green 071
    090 1267355631 Evo 2
    090 1267355788 Evo 2
    091 1267356029 215

    EPROM size jumpers :-
    B701, B705, B706 - 27128 (16k) gesloten
    B701, B702, B706 - 27256 (32k) gesloten

    chips are:
    1267355 547 (16k chip) or 1267353 785 (32k chip)
    1267355 484 (16k chip) or 1267353 787 (32k chip)
    1267355 631 (16k chip) or 1267353 788 (32k chip)
    1267356029 (32k chip)
    1267356186 (32k chip)

    0 261 200 071 M3 195 PS S14B23 195 PS 86-8/89 M1.0 Motorsport
    0 261 200 091 M3 215 PS S14B23 215 PS 9/89-90 M1.0 Motorsport
    0 261 200 090 M3 Evo 2 S14B23 220 PS 88 M1.0 Motorsport
    0 261 200 092 M3 Sportevo S14B25 238 PS 90 M1.0 Motorsport


    motercode

    234EA is 195 or 200PS engine
    234S1 is 220PS M3 Evolution engine
    234S2 is 215PS engine
    254S1 is M3 Sport Evo engine
    (204EA is 320is engine)

    BMW M-3 23L ML31 CHK:5C9A BOSCH B57604 0261200071 1267355303
    BMW M-3 23L ML31 CHK:5CA3 BOSCH B57604 0261200071 1267355303
    BMW M-3 23L ML31 CHK:6B4E BOSCH B57604 0261200071 1267355303
    BMW M-3 25L (velez)pot ML31 CHK:A2FF BOSCH B57604 0261200092 S14-B25 A500


    greetings dave

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    • #3
      So, I am assuming the only difference is the chip? I would also assume that they should be interchangeable, if I swap out the chips inside.

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      • #4
        from what i understand some process faster than others , i too have wondered the same thing .

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        • #5
          Originally posted by Broken88 View Post
          So, I am assuming the only difference is the chip? I would also assume that they should be interchangeable, if I swap out the chips inside.
          Yes bud jou also change the jumpers

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          • #6
            The jumpers denote the EPROM size. A 32K EPROM will work in a ECU with either the 16K or 32K jumpers. However a 16K EPROM will only work on a 16K jumpered ECU. The 16K ECU has jumpers B701, B705 and B706 and the 32K ECU has jumpers B701, B702 and B706.

            All E30 M3 data is 16K in size . For some reason Bosch and BMW decided on using a 32K EPROM part way through production and the solution was to "double up" the data to make the EPROM universal.

            The color of the ECU label does not mater. I have run black, red and green label ECUs using a copy of the same 32K EPROM.

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