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    We had an issue a couple of years ago with the...

    We had an issue a couple of years ago with the attachments taking up too much server space. I had to change some forum settings and some of the attachments became disconnected from the messages they...
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    I have 3500 5.7 4L80E files ranging from 98 to...

    I have 3500 5.7 4L80E files ranging from 98 to '01. This is a '99.
  3. Welcome to the site. Nice to see fans of the...

    Welcome to the site.

    Nice to see fans of the old J cars are still around. I've got an '89 Sunbird GT and a 94 Cavalier RS. 93-94 was the peak for the J body platform imo. There's plenty of...
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    Thermal compound is the preferred solution. ...

    Thermal compound is the preferred solution. Dielectric grease does not aid in heat transfer. If the distributor is corroded and showing white powder where the module attaches it's a good idea to...
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    ECM controlled spark timing imo offers more...

    ECM controlled spark timing imo offers more benefit than ecm controlled fuel delivery. I believe Howell does not alter timing because it makes their job much easier. I have looked at different...
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    I'm concerned it's like some of our Ford and...

    I'm concerned it's like some of our Ford and Chrysler modules which allow initial configuration but do not allow changing once programmed.


    If the configuration cannot be changed with a...
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    Hello, I have never tried reprogramming a CCM...

    Hello,

    I have never tried reprogramming a CCM but the information here agrees with many posts on different threads. It appears the CCM, like many other modules today, can be programmed after...
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    This is good. Howell used to be good about...

    This is good. Howell used to be good about trying to provide support if you got completely stuck. If it turns out a Howell supplied component is bad you may be able to obtain replacement parts...
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    Welcome to the forum. $42 is the correct code...

    Welcome to the forum.

    $42 is the correct code for a true Howell conversion. If the swap was done using junkyard parts you should locate the ecm and get the part number or service number to ensure...
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    Hello, Welcome to the forum. I've always...

    Hello,

    Welcome to the forum. I've always enjoyed seeing well executed 4X4 van conversions. Did you change the cam along with the heads? Even with the stock cam you will notice the difference.
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    Welcome to the forum! That certainly sounds like...

    Welcome to the forum! That certainly sounds like a fun project. Even a stock engine could benefit from some tuning in that application. Are you planning to make any changes to the engine internals?
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    Unfortunately I don't use those tools. If you...

    Unfortunately I don't use those tools. If you use a hex editor such as XVI32 you can copy the entire calibration then paste it at the end of the existing calibration to get a 2x sized calibration. ...
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    Hmmm.... The primary chip in the memcal can be...

    Hmmm....

    The primary chip in the memcal can be recalibrated. The knock filter is tuned to the engine. The backup fuel chips can be duplicated but we do not have all the information to make the...
  14. I would think it will take less time to make...

    I would think it will take less time to make these corrections than to start from the beginning with the Holley system. Have you spoken with the tuner who used the dyno about making small...
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    Mostly, a person is OK switching a program...

    Mostly, a person is OK switching a program between the 3965 and the 7427. Shift logic is different between the 4L60E and the 4L80E transmissions. You would truly have "wierd" stuff going on if you...
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    Hello Vince, The Motoroloa processors in the...

    Hello Vince,

    The Motoroloa processors in the GM computers go to the end of the chip to look for instructions showing where in the chip the program begins. Think of it like opening the last page...
  17. Welcome to the forum. "Touchy" isn't a word I...

    Welcome to the forum.
    "Touchy" isn't a word I would use to describe the early systems. Tuning early TBI could be likened to crop dusting. You try to get everything covered but at the end of the day...
  18. You mean like the Super Duper "Prototype"...

    You mean like the Super Duper "Prototype" calibration supposedly discovered by a pro tuner on a GM CD years ago? :rolleye:

    I've seen it. It's not even a grail shaped beacon.
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    I don't have an official definition for...

    I don't have an official definition for "Calibration Code." I'm simply noting that it seems strange that one processor's "calibration code" would be called a "Bit Pattern Number" while the other...
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    Interesting. The 5.0 identifier "27" hasn't been...

    Interesting. The 5.0 identifier "27" hasn't been listed before.
    http://www.gearhead-efi.com/Fuel-Injection/showthread.php?592-You-lost-your-Memcal-ID

    There is a pile of good memcal information...
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    Are you sure the "Bit Pattern Number" is the...

    Are you sure the "Bit Pattern Number" is the calibration code? It seems like another name for Mask ID to me.
  22. Thread: Hello

    by 1project2many
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    Hello! Welcome to the forum.

    Hello! Welcome to the forum.
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    There are some marine manifolds available if you...

    There are some marine manifolds available if you scour ebay and CL daily. If you have the time and tools it appears injectors could be added to this one:...
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    A number of people worked together here to get...

    A number of people worked together here to get through some of the old info and some new info to come up with this:...
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    A C1 or C2 always seemed easiest to get in and...

    A C1 or C2 always seemed easiest to get in and out of. Good thing, too. They are very uncomfortable to drive!
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