My Holley HP EFI installation thread

Discussion in '94-95 5.0 - Specific' started by white95, Sep 3, 2016.

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  1. white95

    white95 Apex Junky Admin

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    So, what the hell is White95 doing NOW? :evil: Those who have followed my build thread know that my car sometimes sits for months, if not years at a time. A lot of the times is because of life getting in the way but at times its waiting for a tune. In fact, I've never had the car tuned since I had the Pro Comps ported and installed the TFS-R intake. That has been nerely two years. Now that I'm upgrading the complete HCI, I've decided to rip out the factory engine management system in favor of a Holley HP EFI system, PART# 550-604, but why? The Holley setup is much newer technology, nearly plug-n-play, user friendly with modest tuning knowledge, 'self-learns' itself for the start-up and drive ability tune. The software does allow for fine tuning on the dyno. It interfaces with their own 7" LCD display that i'll couple with a custom gauge cluster from Steinmann Performance. Well, eventually. This thread will be fluid and any questions will be answered. (Look mcglsr2 , colorful hyperlinks!)


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    The tear down



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  2. white95

    white95 Apex Junky Admin

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    The engine and injector harness

    This is a diagram of the main engine harness for those who like reading diagrams:

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    This is an overview picture of the main engine harness for those who like pictures:

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    The kit that have came with an over the manifold, universal Bosch style injector harness. However, after reading this thread, I realized this harness needed some work to properly work with the SEFI Ford setup.

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    Wiring the engine bay

    The modified injector harness simply snaps on!


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    The stock style distributor and remote TFI module [lower left, in front of the strut tower] will be removed and replaced with this "fox style", TFI mounted distributor. This particular part came from a local guy, Stuart, who has a NASTY solid roller, 410w/AFR220/Super Victor 600 rwhp SN95 that's controlled by the same Holley HP setup I'm installing. In fact, he has been a wealth of information and we'll see pics of his GT later.


    We will be referencing this drawing:


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    The aforementioned distributor:


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    Installing the TFI adaptor harness (man is this thing long or what?)


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  3. white95

    white95 Apex Junky Admin

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    Main power harness



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  4. white95

    white95 Apex Junky Admin

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    Relay panel
     
  5. white95

    white95 Apex Junky Admin

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    Interior wiring and ECU mounting

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  6. white95

    white95 Apex Junky Admin

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    Miscellaneous parts and accessories

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  7. rz5.0

    rz5.0 Legend

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    No more QH

    Sent from my LGLS991 using Tapatalk
     
  8. B.mad

    B.mad Well-Known Member Preferred Vendor

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    i don't get it.
     
  9. white95

    white95 Apex Junky Admin

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    What don't you get bro?
     
  10. B.mad

    B.mad Well-Known Member Preferred Vendor

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    All these reserves.

    sent from the toilet or from my cubicle
     
  11. B.mad

    B.mad Well-Known Member Preferred Vendor

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    So this is going to replace the ecu entirely? Is there a reason why? Better tune-ability?

    sent from the toilet or from my cubicle
     
  12. rz5.0

    rz5.0 Legend

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    He will come back and fill those up.. It keeps his post from been broken up in between other peoples post

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  13. B.mad

    B.mad Well-Known Member Preferred Vendor

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    Haha i know. I was just being dumb

    sent from the toilet or from my cubicle
     
  14. rz5.0

    rz5.0 Legend

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    Ha ha.. I see

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  15. white95

    white95 Apex Junky Admin

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    B.mad - This will replace the ECU and engine control harnesses completely. The Holley system literally self-learns the tune but also allows fine tuning. This was a major selling point since my car has sat for months upon months waiting for a tune at times.


    [video=youtube_share;qwkqjotkDJQ]http://youtu.be/qwkqjotkDJQ[/video]


    With additional parts, I will be able to ditch the distributor/TFI altogether and run a legit DIS (distributorless ignition system) to be completely awesome.
     
  16. B.mad

    B.mad Well-Known Member Preferred Vendor

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    thats pretty dam cool. i like it
     
  17. Frank.JD.Perez

    Frank.JD.Perez Well-Known Member

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    so...is it done yet?...
     
  18. white95

    white95 Apex Junky Admin

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    Not even close!! I did jump into the deep end with some initial tear down and minor assembly work!
     
  19. Frank.JD.Perez

    Frank.JD.Perez Well-Known Member

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    I'm not impressed :challenge:
     
  20. white95

    white95 Apex Junky Admin

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    I don't care :D This process will me several days and will not be rushed.
     
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