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Thread: SST27SF512 replacement.

  1. #1
    Super Moderator Six_Shooter's Avatar
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    SST27SF512 replacement.

    Has there been a replacement EEPROM established for the SST27SF512?

    I know I can still buy some of these EEPROMs, but it seems that counterfeit versions are becoming more commonplace than they used to be which seems to cause problems.

    Ideas?
    The man who says something is impossible, is usually interrupted by the man doing it.

  2. #2
    EFI GearHead ! EagleMark's Avatar
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    All mine from Moates are flawless.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  3. #3
    Super Moderator Six_Shooter's Avatar
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    I haven't had any problems yet either, but I'm getting low and would like to know what can replace these EEPROMs, since one day all that will be left will be the counterfeits.
    The man who says something is impossible, is usually interrupted by the man doing it.

  4. #4
    EFI GearHead ! EagleMark's Avatar
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    Good question.

    But like 2732a chips that were obsolete they are now readily available. I think if there's a need china will build it...

    That's where all my 2732a chips come from and never had a bad one. Even UV erased and burned one 10 times to test it. Got about 100 stock GM ones if that ever drys up...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  5. #5
    EFI GearHead ! EagleMark's Avatar
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    Wow, I just looked around eBay and hardly any look like what Moates sells? One had a closeup and the edges were horrible...

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  6. #6
    EFI GearHead ! EagleMark's Avatar
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    Well I take that back, the ones Moates has pictured are same as some on eBay and different then ones I got last time?

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  7. #7
    Super Moderator dave w's Avatar
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    I've been using the Winbond (http://www.winbond.com/hq/enu) W27E512 to replace the SST27SF512, which does not work with the Burn 2. I find it very strange that Winbond would still keep the SST logo, but add the letter MTP on their version of the SST27SF512.

    I use my Batronix to flash the Winbond W27E512 chip: http://www.batronix.com/shop/program...32P/index.html



    DigiKey shows the Winbond W27C512:

    http://www.digikey.com/scripts/DkSea...&chp=0&PV961=2

    dave w
    Attached Files Attached Files
    Last edited by dave w; 03-22-2013 at 08:34 PM.

  8. #8
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    i've bought 27SF512s from probably 5 different sources now, every one of them looked different, but all worked in my BURN2? i still have a tube of 9 from my last acquisition that i still need to find a use for.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  9. #9
    I have 5 or 6 extras. By the time I go through them (if I ever do), I'll probably be swapping in an OBD II system with flash reprogramming, anyway. I'm not too worried.
    Familiar with 1227747 and 16197427 PCMs

  10. #10
    Fuel Injected! kunsan1987's Avatar
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    i bought my programmer and 3 chips from MCUmall. i've had no problems with these SST27SF512-70 chips.
    They sell for $3.95 US from canada
    http://www.mcumall.com/comersus/stor...idProduct=4233

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