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  1. #1
    Fuel Injected!
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    i will do some more testing this week and post back, thanks for the info.

  2. #2
    Fuel Injected!
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    when you install the 27sf512 chip do you remove the chip to program it or re flash it though the adld connector?

  3. #3
    RIP EagleMark's Avatar
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    You still have to remove it and program like the old UV erase. But it only takes a click of mouse to erase.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  4. #4
    Fuel Injected!
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    what do i need to install it in my ecm to make it easy to remove an replace? you are right about tape on the uv erasables in my case,i think the silver heat pipe tape did some thing left it off very small knock count with the same timming an about the same fuel. a 1227747 is a pull an swope with a 16144288, the 288 is what come in my truck. getting this thing to work but running out of old uvs, if i order tonight i will get my supplies friday can work on it saturday unless something breaks down

  5. #5
    RIP EagleMark's Avatar
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    You need a Moates G2 adapter is the easiest and can order the 27FS512 chips there too.

    http://www.moates.net/g2-memory-adap...g-spacing.html

    Or Dave did a writeup on DIY...
    http://www.gearhead-efi.com/Fuel-Inj...rsion-(27SF512)

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

  6. #6
    Fuel Injected! pmkls1's Avatar
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    You still have to purchase a 28 pin ZIF socket separately with the G2 adapter, but it is all available there on the same site. That's the site I recommended earlier. Installing the G2 adapter requires removing the plastic terminal retainer for the PROM socket from the ecm daughterboard and then desoldering the pins so that you can solder the adapter to the daughterboard. It sounds more difficult than it is though as anyone with decent soldering skills and a little patience can do the job fairly easily. The moates site has lots of documentation for their products explaining the installation as well.
    1999 GMC Sierra 1500 standard cab long bed 4.8 V8 2WD - A work in progress.
    2000 Grand Prix GT sedan 3800 - My new daily driver inherited from the wife via the insurance company totaling it out after a minor collision.
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  7. #7
    RIP EagleMark's Avatar
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    If you solder the G2 adapter directly to board without DIP sockets as shown in instructions the adapter and chip will clear cover when done.

    ZIP socket on top is great tool while tuning.

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

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