Project MULE - Expedition build on a 1991 1500 4x4 Suburban

Discussion in '1936-Present Suburban' started by pma4x4, Oct 1, 2012.

  1. noJeepshere

    noJeepshere I Drive Trains! Premium Member

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    Glad to see you're back, I was wondering about you and how things were doing, good to hear they're looking up for ya.
     
  2. pma4x4

    pma4x4 1/2 ton status Premium Member

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    Anyone have brand recommendations for R134a Condensor? A brand you have used your self with great success?
     
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  3. nutt7

    nutt7 1/2 ton status Premium Member

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    Glad you're back! Here is a link to a post I made about the condenser I got (from 2012). The p/n is in post 1. Despite being shorter in width, it cools my entire suburban really well. I am from AZ too, and it worked excellent in the summer (we did business once, not sure if you remember). I also have windstar fans too, which help at low speeds. The longer I drove, the cooler it got. On longer drives, it could get around 40 at the vents when its 110F. 32 or so when its under 100F. Go to Post 68 for a picture. The core mounts weren't perfectly set up, but it was super easy to make it work. Others chimed in throughout the thread on ones they found too.
     
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  4. pma4x4

    pma4x4 1/2 ton status Premium Member

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    I saw that one but when reviews said it didn't fit I passed on it. Perfect! Did you have to modify or make mounts?

    Aldo do you have a write up on the Windstar fan upgrade?

    Most excellent thanks!

    PS yeah I think I got 3/4 ton from outers from ya yes?
     
  5. nutt7

    nutt7 1/2 ton status Premium Member

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    I had to modify a mount I think. Pretty sure I drilled one hole but maybe not even that. I know there was a provision for moving whatever I moved...It took a couple minutes tops and I'm no fabricator.

    For the windstar fans, I originally had a guy weld brackets on my aluminum radiator that fit the windstar shroud mounts. The radiator took a dump so I made brackets out of 1/16 steel scrap and screwed them to the core support. Not enough time has passed to see how it'll hold up, but I might do another version. The shroud only got minor trimming to clear hoses. I have not filled in any of the gaps to seal it perfectly to the radiator but it cools fast for the PNW. Others on the forums did things more fancy but I like easy and effective. More recently, I grabbed the relay box and the low speed resistor from a windstar so I can run it in two speeds. On high it sucks a lot of amps and I have melted a relay or three. Low speed has been perfect although I haven't had to deal with it in AZ yet. The factory relay box has a 70a relay and a 30a relay. I was using two 30a relays.

    And yes, I sold you some caliper brackets. I just recently purchased another set since I didn't need the ones that allow 15" wheels anymore...and the custom ones caused uneven wear on my pads and calipers. After hunting some down, I realized I gave you a smokin deal, lol!
     
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  6. pma4x4

    pma4x4 1/2 ton status Premium Member

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    I mentioned doing some top end upgrades on my truck and someone mention Dynamic EFI. Please step forward and prepare to be questioned! :-)
     
  7. cyclic

    cyclic 1/2 ton status Premium Member

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    You called? :woot:
     
  8. pma4x4

    pma4x4 1/2 ton status Premium Member

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    Their website is a little plane can you kind of give me the basic rundown on getting the dynamic EFI I mean how exactly do I get the truck started with the dynamic EFI is there a baseline program in it or what how much monkeying around do I have to do

    I guess my question is if I order the dynamic EFI ECM, I get that and then I have the original ECM in my other hand what do I do then?
     
  9. cyclic

    cyclic 1/2 ton status Premium Member

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    Install the software, plug in the new computer, connect them and upload the correct rom. Start it up! You can make adjustments and upload new settings while its running. When I get home I'll throw up more info.
     
  10. cyclic

    cyclic 1/2 ton status Premium Member

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    What ECM do you currently have?

    Mine is the factory 7747 with the EBL Flash installed. I use TunerPro for editing, can't beat free. All I did was load the correct bin (all software is included). After that, I killed the error code for the emissions pump removal. And did a basic self tune. Just playing around in the software and bin files will give you ideas.

    The EBL site covers the basic tuning, first page http://www.dynamicefi.com/Tune_Intro.php second page http://www.dynamicefi.com/Tune_Intro2.php It really pretty much covers basic tuning and getting you up and running well.

    For an advanced discussion of the EBL tuning and further insights try https://www.thirdgen.org/forums/diy-prom/356351-tuning-ebl.html

    I love that you can have multiple tunes saved in the computer and hot swap between them. Eight of them if I remember right. Set the first as a base line "good" tune, and then play and adjust the others till you find your happy spot. I've only done the basic self tune, as I'm waiting for time to do some exhaust and intake work. Life is quite busy right now, and I can't have my daily driver down very long.
     
  11. pma4x4

    pma4x4 1/2 ton status Premium Member

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    Okay so with the different heads and cam I'll have in there it will learn a new Fuel and timing Curve to fit that new build or do I have to do it manually?

    IIRC I think I have the 7747
     
  12. cyclic

    cyclic 1/2 ton status Premium Member

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    You can do both. Start with the "stock" bin closest to your build. Run it in self tune several times. Once it's running decent, run your fuel of choice and start adding timing. Then more self tune to pull out any spark knock and you should be good to go.
     
  13. cyclic

    cyclic 1/2 ton status Premium Member

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    The 7747 means for an EASY install. It'll work perfect with the trans you have.
     
    Last edited: Sep 12, 2017
  14. Big Ray

    Big Ray 1 ton status Premium Member

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    :popcorn::popcorn::popcorn:
     
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