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Thread: My twin supercharged tbi 350 miata build

  1. #61
    Super Moderator dave w's Avatar
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    Quote Originally Posted by Shawn1989 View Post
    Which one would i purchase? The $430 or $380?
    I was thinking other members might comment on other computer options?

    I would purchase the $450 option, which includes the USB to Serial adapter, and tested system.

    dave w

  2. #62
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    Maybe other members can offer a budget suggestion for a TBI boost computer?
    The 1227749 with $58 can be used with TBI and boost. The code and hardware are present to control TBI injectors although this path is not well explored. There may be some writeups on the 'net by people working to use this ecm with $58 (or $59) in TBI mode.

    Shawn, in my 30+ years experience, the one statement about cars that seems to be true is this: "You can save time or you can save money, but it's rare to save both." If your budget does not allow for a designed and documented solution then you will be investing time and labor to find an alternative. Either you should start searching for EBL or similar for sale used and cheap, or you should plan to learn enough about the GMECM family to make an alternative ecm work.

  3. #63
    Fuel Injected! dispoejoe95's Avatar
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    [QUOTE=Shawn1989;56798]Dead thread. PAH!

    you got another thing comin.

    http://youtu.be/QXcdwEEEiH0


    Shawn...I haven't been a member long so I hadn't seen any of this thread before. Just gotta say, that is awesome!!! Can't wait to see some video of it on the track once you get that beast tuned!

  4. #64
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    Ahhh... sounds like Bob's Malibu. Don't bother buying tunes (music), the only singing you'll hear is those blowers.

  5. #65
    Super Moderator dave w's Avatar
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    The Dynamic EFI system will do tuning (VE Learns), possibly saving money in the long run!

    I like being able to help others "Learn" how to tune for themselves! ... Tuition is less expense than Tuning.

    dave w

  6. #66
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    A local guy MIGHT be able to tune it...... however, before i do that i would like to run it on a rising rate FPR through a load to see if it going to throw this belt..... if not then ill take it to the dyno and see what he can do :] need to grab a 2 bar map sensor though.

    anyway, fleabay came through lol


  7. #67
    Super Moderator dave w's Avatar
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    I wonder if the local tuner uses a similar AFR spreadsheet to tune with?

    dave w

  8. #68
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    The car is just SICK.

    It also looks vaguely familiar. Are you by chance in Charleston, SC (please god, yes.... I'd love to see this thing!)
    -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)

  9. #69
    Carb and Points!
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    this is hideous....I love it....I'd love to rent it one weekend!!!!

  10. #70
    Carb and Points!
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    Quote Originally Posted by Shawn1989 View Post
    ... After that I grabbed an old miata front sway bar; chopped the ends off and they fit perfectly on the heads. ...
    I havenīt had time to read the whole thread yet so I might be missing some information.
    Are you planning on welding on an old sway bar?
    I like the idea of using what you already have but you should NEVER use a sway bar (or spring) for something that should be welded. They are hardened and tempered and might crack after welding. Maybe not immediately but sooner or later that might happen. Steel that are made for springs (a sway bar is kind of a spring and uses the same material) are not considered weldable and that is just because they are prone to cracking. You can easily weld in them but they will usually become very brittle after welding.

    What usually works if you have to is soldering/brazing (I donīt know which is the right term) with high temperature silver solder but that would involve a lot of heat with a gas welder with such big parts as this. Itīs not that practical.
    In this case I would fabricate the parts in weldable steel instead.

    But I really like the idea of a Ch SB in a Miata, even without the blowers.
    The blowers will make a ride in your Miata like riding bareback on a natural aspirated Ch SB. LOL!
    The more I learn about women, the more i love my cars and motorcycles!

  11. #71
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    Any news on this build? :)
    -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)

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