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  1. As a test, do whatever you have to do to disable...

    As a test, do whatever you have to do to disable the bypass valve so it stays in the 'open' position. I know on the LSA's just removing/capping the vacuum hose defaults the valve to open all the...
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    12200411 is the Service Number, which describes...

    12200411 is the Service Number, which describes the hardware inside. 12212156 is the operating system (the software that runs on the hardware). Any PCM with the service number of 12200411 can be...
  3. Thread: Help.

    by blindsquirrel
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    21,256

    '78 F100 relisted at $2800, OBO:...

    '78 F100 relisted at $2800, OBO: https://www.ebay.com/itm/235565189965
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    https://www.ebay.com/sch/i.html?_nkw=12200411+prog...

    https://www.ebay.com/sch/i.html?_nkw=12200411+programmed+vin

    Much cheaper than all the stuff you'd need to buy to flash this one PCM this one time that may not even work, probably also cheaper...
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    Attach files here, not offsite. It's free and no...

    Attach files here, not offsite. It's free and no one can ever take them offline except HPT themselves.

    PCM is corrupt. You can try a dealer-type reflash with dealer-type tools (Tech2/MDI + SPS),...
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    Yeah, but 'recommended' for what combo? What...

    Yeah, but 'recommended' for what combo? What rockers? What RPM? This one seems to work just peachy up to 6300, they're perfect for that much.
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    I think you probably don't need more open...

    I think you probably don't need more open pressure; it's probably fine with 400 open, it just needs more than 140 or whatever it is on the seat (depending on the installed height, which is as yet...
  8. Some people have a learning plateau instead of a...

    Some people have a learning plateau instead of a learning curve. This one has started three threads, has attached zero files for any of them.

    I'm thinking of writing a little script that...
  9. 146446

    146446
  10. That's the cells that line up from the Gen 4/304...

    That's the cells that line up from the Gen 4/304 kPa column, the rest has to be interpolated (across each of the empty cells) to fill out that column, then that column pasted all the way across....
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    If you go more than 400lbs open pressure,...

    If you go more than 400lbs open pressure, allegedly, the stock or stock-type non roller tip rockers and valve tips start having wear issues (and it's not just a geometry thing). The only roller tip...
  12. Or, I mean, you could just put the data in that...

    Or, I mean, you could just put the data in that matches that fuel pressure.

    146439
  13. The 0 kPa column in Gen 3-format data is assuming...

    The 0 kPa column in Gen 3-format data is assuming 58 PSI rail pressure. For 43 PSI, you need to use the 304 kPa Delta column from one of the Gen 4 tables in the spreadsheet. There's no way to work...
  14. Or... if the base pressure is lowered from 58 to...

    Or... if the base pressure is lowered from 58 to 43, then the referenced regulator can add up to another 15 PSI rail pressure before the in-tank reg pops off. And adjusting the injector data for...
  15. Yeah, airflow scaling is... yuk. Makes everything...

    Yeah, airflow scaling is... yuk. Makes everything so complicated for anybody who comes along later trying to help and wasn't there from the very beginning.
  16. They make plugs that go in place of the little...

    They make plugs that go in place of the little pod regulator thing in the pump module, got to have that done if the system is ever going to be able to make more than 58 PSI. Lingenfelter has them.
    ...
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    Is this like when you work at a shop and you come...

    Is this like when you work at a shop and you come in one morning and there's this car/truck parked out front you've never seen before that's showed up out of the blue and it just has a note under the...
  18. You're doing yourself no favors by not having the...

    You're doing yourself no favors by not having the regulator referenced to manifold/boost, first, in the general sense because boost above atmospheric has the same effect as reducing rail pressure and...
  19. Thread: Help.

    by blindsquirrel
    Replies
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    21,256

    '71 C-10, $3500...

    '71 C-10, $3500 https://www.ebay.com/itm/386993158138

    bonus points subtracted for the truly awful eBay-AI-assisted description:

    Just reading that I feel like I need a shower, I feel all greasy...
  20. All I did was turn off burst knock and the KS...

    All I did was turn off burst knock and the KS DTCs, and somebody'd been messin' where they shouldn't in the catalyst lightoff spark table...
  21. Look at the link in my sig, it doesn't have your...

    Look at the link in my sig, it doesn't have your injectors but it has both referenced & returnless data right next to each other so the differences in how they are set up are easy to spot.
  22. 'Return' meaning it has a vacuum hose from...

    'Return' meaning it has a vacuum hose from manifold to regulator, and not just that there is a hose for fuel return to the tank, right? It's the presence/absence of the vacuum reference that makes it...
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    https://www.hptuners.com/my-account/tunerepository...

    https://www.hptuners.com/my-account/tunerepository/

    146357
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    Titanium retainers on a street car are great as...

    Titanium retainers on a street car are great as long as you never ever get an oil analysis done, and make sure to chalk up any bearing failures to cosmic ray strikes or Mysterious Acts of God's Love....
  25. https://forum.hptuners.com/showthread.php?58157-Ge...

    https://forum.hptuners.com/showthread.php?58157-Gen4-idle-tuning-guide
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