Bringing TBI and Multi Port Fuel Injection to a New Level.     EFI Conversions and Tuning! Seattle to Portland! E-mail Tuning Consultant!

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    Thank you for suggesting a process to help get...

    Thank you for suggesting a process to help get memberships approved. I do appreciate it. Spammers are merciless and I agree with Dave W that an "invite" button could be used to spam users from...
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    Sticky: There is a sticky near the top of this forum...

    There is a sticky near the top of this forum entitled "Help! I can't figure out how to post an introduction!." Follow those instructions to post an introduction. Making a post in another forum is...
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    Greetings! I think your car will be unique when...

    Greetings! I think your car will be unique when finished.
  4. Thread: Hey all!

    by 1project2many
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    Welcome to the forum! I've done the same...

    Welcome to the forum!



    I've done the same thing myself. You're gonna fit in just fine. :laugh:

    Quick tip (in case you don't know): Sometimes Google does a better job searching the forum...
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    Hi Dan, I've done several TBI swapsn and have...

    Hi Dan,
    I've done several TBI swapsn and have tuned a number of 7747 ecm equipped vehicles. I always advise people to use a VSS. The 7747 uses vehicle speed to adjust IAC. Without a VSS signal...
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    Hi Dan, I am unable to locate a 16197424 ecm. ...

    Hi Dan,

    I am unable to locate a 16197424 ecm. The 16196396 ecm is an OBDI C3 ecm used with many manual transmission TBI trucks from 93-95. It is actually an "older" generation computer. ...
  7. GM chose to use oddly spaced trigger pulses to...

    GM chose to use oddly spaced trigger pulses to make effective use of an already designed ignition module. For most engines the module doesn't need to do anything more than control the coil current...
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    That's a good question. If you can get cal #'s...

    That's a good question. If you can get cal #'s and a VIN you can use https://tis2web.service.gm.com/tis2web/ to look up original information. Starting with the VIN you are brought through a series...
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    Congratulations! What's the next step? Got...

    Congratulations! What's the next step?

    Got any pictures?
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    Have you checked fuel pressure? Vortec / L99...

    Have you checked fuel pressure? Vortec / L99 injectors need 50 psi to open. Be sure to check pressure while cranking, too.
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    TBI injectors are not "manifold referenced." The...

    TBI injectors are not "manifold referenced." The regulator can maintain fuel pressure within a narrow window without large swings like you might see in PFI. Since fuel pressure does not change with...
  12. I've just sent another message explaining what...

    I've just sent another message explaining what happened. Hopefully this helps folks out.
  13. Nice to see you, Frank. Funny, My J cars have...

    Nice to see you, Frank. Funny, My J cars have sat for several years for the same reason. I just cleaned up the '94 and put it back on the road this summer.
  14. It sounds like follow up messages didn't send to...

    It sounds like follow up messages didn't send to everyone. So if you are reading this thread, please consider post #6 to be your follow up message. :)
  15. Thanks for letting me know.

    Thanks for letting me know.
  16. I truly apologize for the confusion. Nothing is...

    I truly apologize for the confusion. Nothing is wrong other than a tired admin forgot to uncheck a pile of default settings before sending an email change notice to one account.

    Just out of...
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    Welcome to the forum. As another lifetime...

    Welcome to the forum. As another lifetime mechanic, I think it's fair to say it's better to ask than to guess wrong, especially when it comes to understanding some of the tuning stuff. And you...
  18. An oxygen sensor generates voltage based on the...

    An oxygen sensor generates voltage based on the difference in oxygen level between the exahust and ambient air. If there's more unreacted oxygen in the exhaust the sensor generates a lower voltage...
  19. You might be right although Ford did use a...

    You might be right although Ford did use a similar system on '90s F trucks. But I think a reservoir with a way to vent vapors would be better due to the heating. Mercruiser systems from the 90s...
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    Diagnose rich condition by disabling all fuel...

    Diagnose rich condition by disabling all fuel delivery and cranking with throttle open. If car eventually fires then dies look at excess fuel as an issue.

    Cranking fuel tables rarely scale with...
  21. I have done this in my '57. Return type EFI...

    I have done this in my '57. Return type EFI systems warm the fuel as the engine runs. Vapors are formed as fuel in the tank warms. The in-cab tank is not designed to handle a large amount of...
  22. Welcome to the forum. Well... it sounds like...

    Welcome to the forum.

    Well... it sounds like you should keep waiting to start your engine swap. You could end up with several more trucks to pick parts from. :)

    Hmm... "BOP and dual bolt...
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    Hi there, I'm not familiar with autoprom but...

    Hi there,

    I'm not familiar with autoprom but the instructions at http://static.moates.net/manuals/AutoProm%20Quick-Start%20Guide%20Version%203_0.pdf seem fairly straightforward. After ensuring...
  24. I've watched as a few different people worked...

    I've watched as a few different people worked through similar conversions. They seem to work out ok although there's rarely any reports about the swap after the first year. Tuning your own has the...
  25. I get that. We are focused on tuning but the...

    I get that. We are focused on tuning but the rules here have never been rigid. There are quite a few "My engine doesn't run right and I don't know why" threads and we generally have folks willing...
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