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Thread: '7747 Flash Chip Conversion (27SF512)

  1. #46
    Super Moderator dave w's Avatar
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    Quote Originally Posted by 89S10_Project View Post
    OK thanks for the clarification. Is there a gm analog to the EBL setup?
    I'm not sure I completely understand your question.

    Moates.net offers a chip emulator called the Ostrich 2.0 http://www.moates.net/ostrich-20-the...eed-p-169.html which replaces the chip. The Ostrich 2.0 can be updated real time, even while driving the vehicle.

    dave w

  2. #47
    Fuel Injected!
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    Quote Originally Posted by dave w View Post
    I'm not sure I completely understand your question.

    Moates.net offers a chip emulator called the Ostrich 2.0 http://www.moates.net/ostrich-20-the...eed-p-169.html which replaces the chip. The Ostrich 2.0 can be updated real time, even while driving the vehicle.

    dave w
    That looks pretty much ideal. I think I want to avoid having to burn chips all the time while I'm tuning. Still not sure though.
    -Phil, in Charleston, SC

    '89 S10 Blazer: SOA SAS: Dana 44s, 5.7L V8, 700R4; 35s, 4.10:1; TBI with 1227747 ECM
    '94 Grand Cherokee: 4.0, 4" lift, 31s
    '90 Jeep Cherokee: In progress: 5.7L V8,700R4,NP231C, D44s. TBI with 1227747 ECM
    '87 Fiero GT: 3.8SC (initial research stage)

  3. #48
    Super Moderator Six_Shooter's Avatar
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    EPROM Emulating speeds up the tuning so much, I don't know why anyone would go any other route in this day.
    The man who says something is impossible, is usually interrupted by the man doing it.

  4. #49
    Electronic Ignition! Queencityspeed's Avatar
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    I was about to order a few ZIF sockets and thought I would get a few chips. Is this the correct 27SF512 chips? http://www.mouser.com/ProductDetail/...BKntIIeqIek%3d

  5. #50
    Super Moderator Six_Shooter's Avatar
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    Quote Originally Posted by Queencityspeed View Post
    I was about to order a few ZIF sockets and thought I would get a few chips. Is this the correct 27SF512 chips? http://www.mouser.com/ProductDetail/...BKntIIeqIek%3d
    That came up as a PLCC case, which is not correct.
    The man who says something is impossible, is usually interrupted by the man doing it.

  6. #51
    Carb and Points!
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    Quote Originally Posted by EagleMark View Post
    That's way cheaper than the adapter from Moates! I'll have to get a few of them.

    Tried burning the old chips again this weekend. Got one out of three, still consistent!
    I've been helping my bro and we are using the old school UV erase, burn and FAIL! Repeat!!! After feeling the frustration, I was going to bite the bullet but found myself perusing the FAQ and found this thread. I'm all about looking at it as building a better mouse trap. Kudos to all!!!

  7. #52
    Super Moderator dave w's Avatar
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    Quote Originally Posted by stew86MCSS396 View Post
    I've been helping my bro and we are using the old school UV erase, burn and FAIL! Repeat!!! After feeling the frustration, I was going to bite the bullet but found myself perusing the FAQ and found this thread. I'm all about looking at it as building a better mouse trap. Kudos to all!!!
    http://www.gearhead-efi.com/Fuel-Inj...-27SF512-Chips ... dave w

  8. #53
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    Thanx for the offer dave w, Ordered a bunch of them ZIFs.

    Quote Originally Posted by cmaje72 View Post
    If you are really on a budget and do not want to mod your 7747 you can take a 27SF512 and solder a wire on it like you did with the adapter. Modify the stock socket slightly and pop the 27SF512 right on there.
    Does not make for easy chip swapping but its the ultra low budget method.
    Got another question...suppose ya modified the EEPROM^^^do you program it the same way???

  9. #54
    Super Moderator dave w's Avatar
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    Quote Originally Posted by stew86MCSS396 View Post
    Got another question...suppose ya modified the EEPROM^^^do you program it the same way???
    You need to burn the 27SF512 with offsets see this link: http://static.moates.net/manuals/FlashAndBurn.pdf

    dave w

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