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  • #1

    AAN EPROMs ..

    hy all !

    well I need to buy empty eproms to copy one chips.
    so what kind of chips did I have to buy in "chip shop" ? what did I have to say to man i shop?

    are chips for fuel and boost the same one?

    THANKS
    Igor
    Tags: None
  • #2
    27c512 and 87c257.
    Buy from ebay.
    http://tuner.ee - http://www.facebook.com/tuner.ee

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    • #3
      od Dmitri , but which one is for boost and for fuel ?
      tnx

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      • #4
        Mmm I have told you in the past.
        87c257 is boost.
        http://tuner.ee - http://www.facebook.com/tuner.ee

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        • #5
          sorry. I forget it..
          do you have this 2 chips for sale? because I can't find 87c257 in my country.

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          • #6
            Originally posted by prj View Post
            27c512 and 87c257.
            Buy from ebay.
            Hmm...27C512 seems to come in a variety of pin no. and other configs. Which one is appropriate?

            http://avnetexpress.avnet.com/store/...12&topSellers=
            RS2'd 93 UrS4 5 spd sedan
            94 UrS4 V8 6 spd manual avant

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            • #7
              all I know it must have 28pin ...

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              • #8
                Originally posted by UrS4boy View Post
                Hmm...27C512 seems to come in a variety of pin no. and other configs. Which one is appropriate?

                http://avnetexpress.avnet.com/store/...12&topSellers=
                Dave, have you never seen an ECU inside?
                The chips are both DIP-28
                http://tuner.ee - http://www.facebook.com/tuner.ee

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                • #9
                  Originally posted by prj View Post
                  Dave, have you never seen an ECU inside?
                  The chips are both DIP-28
                  Yes, but I never counted pins, even when swapping chip sets.

                  Okay so 28 pins. But there are 40 ns, 60 ns, 80 ns, 120 ns, etc. versions of these chips. What is the minimum clock speed?
                  RS2'd 93 UrS4 5 spd sedan
                  94 UrS4 V8 6 spd manual avant

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                  • #10
                    Access speed, not clock speed. I have found that even 200ns works fine.
                    http://tuner.ee - http://www.facebook.com/tuner.ee

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