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Thread: Whatever!!!!!!!!! Gearhead-EFI Edition

  1. #466
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    Robert, is Scot Sealander on 60deg? You should talk with him if you don't already. At one point he'd resurrected and modified the MAF / SD hybrid code in early 80s 2.8s so he could correlate SD calculations with MAF measurements. He wrote code that would self correct it's VE tables and after seeing too much activity went back in and reworked the SD calculations to 1% accuracy. When a former GM calibration engineer looked at his code he exclaimed "It's overkill. 2% is more than sufficient." I'm not sure Scot knows of that part though. Anyway, Scot's a very knowledgeable guy and I believe he's still out there posting.

    Greg, as I was learning GM code I had all sorts of props set up. For example, before I'd learned "C" I wrote code in Qbasic to do some of the ecm math so I could watch how the code worked. Problem was, Qbasic didn't do hex and the math had to happen in hex to match the ecm. So I had to write the program to convert decimal to hex and perform math operations on letters. Lotsa work but I learned a lot.

    Another time I had pink index cards spread out on the living room floor representing the stack, registers, and memory. I was moving cards from pile to pile, increasing and decreasing the stack with each operation because I just didn't have the picture in my head of how it all worked together. It gave me a visual representation that I can still use today. And I was able to donate the cards to my wife for recipes when I was done. :) x
    Last edited by 1project2many; 08-23-2012 at 05:14 AM.

  2. #467
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    as long as i've been on the forum, he's popped on once to ask for help in getting into his W-body.com account, which he promptly posted a For Sale thread of his TSTE GP with custom code. pretty sure he also posted it in the TGPForums for sale section as well, but i really don't remember seeing too much activity, even though it was a ridiculously low price.

    i'd really like to see him around more, but i imagine he's got a pretty busy life at this point.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  3. #468
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    I'm not so sure Scot's that busy these days. I know he worked in avionics repair for the "I'll tell you but then I'll have to kill you" guys but I'm betting that he's old enough to have the option to retire. He once told me he tried to dedicate 10 to 20 hrs per week disassembling code every week. I'll bet he has quite a library of code by now.

    I'm sure that his car ad matched his personality and completely understated what was really going on.

  4. #469
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    Quote Originally Posted by gregs78cam View Post
    I haven't started anything yet, just making a list, and seeing if the idea is possible.

    LS stuff, I'm not sure. Most '96+ stuff there might be Vortec, maybe harness, PCMs, I have yet to see to see an actual LS engine in a vehicle there.
    Quote Originally Posted by RobertISaar View Post
    i have yet to see any LS engine in a yard near me.
    Here in North Idaho we are ususally 5-10 years behind newer stuff showing up in JY. But I have seen JY back east and salt states loaded with LS engines years ago.

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  5. #470
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    Several years ago some guys on an internet forum were complaining they had no high performance lifters available. So I went out to my junk... errr... parts pile and dug out a lifter for that engine and for an Lt1. I dissembled the two, swapped plunger and checkvalve springs, and reassembled one taking pictures along the way. Posted the results and Woohoo! Now there was an upgraded lifter available to the average guy. Pick up some LT1 lifters, swap out the springs, and you're good to go.

    I got curious today and started searching. The lifter upgrade is everywhere and not just for that original engine. Guys are talking about it like it's done every day. There are at least two internet stores selling "upgraded" stock lifters and one selling springs only for DIY as well. And I see that an aftermarket company is selling a lifter now that is actually designed for high performance use and will fit in the engine that had no lifters just a few years ago. The thread that introduces it calls it an "alternative" to the hybrid lifter... as if the hybrid is the accepted standard! Too cool. Well, I'm really happy that someone took notice and realized there was a market for these parts. The four and six cylinder guys buying cheap cars and finding ways to get more out of them are the heart of hotrodding today.

  6. #471
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    http://www.tgpforums.com/index.php?t...43678#msg43678

    Scot's 1990 TSTE, 1 of 1000, $400. last logged in for that post.

    on W-body, he hasn't logged in since 2006.
    on 60V6, 2 posts since 2004.
    he actually logged in to TGO 2 days ago, but he doesn't post often.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  7. #472
    Fuel Injected! JeepsAndGuns's Avatar
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    I know now why I did not go to collage. Its just not for me....lol
    Just got back from 3 days worth of classes for work. Had to go to the JD school at a collage in northwest mississippi, just south of memphis, TN.
    Had a 1 day hydraulic systems class, and a 2 day electrical methods & techniques class. Passed the hyd class with a 90, and the electrical with a 95.
    One thing that was funny, the instructor took a recording of the canbus network on a new tractor and when he displayed the data, it looked almost identical to what a bin file looks like in tunerpro when you look at it in the hex editor.
    79 Jeep Cherokee, AMC 401, T-18 manual trans, hydroboost, 16197427 MPFI system---the toy

    93 Jeep YJ Wrangler, 4.0L, 5 speed, 8.8 rear, homebrew hub conversion and big brakes, hydroboost, 2.5in OME lift, 31x10.50's---the daily driver

    99 Jeep WJ Grand Cherokee limited, 4.0L, auto, 2wd, leather and power everything, 99% stock---the long distance highway ride.

  8. #473
    Super Moderator Six_Shooter's Avatar
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    You guys can keep your $8D/S_AUJP...

    I got back to tuning a friend's truck today that is a conversion ('67 Chev pick-up, with a 365, which is a smaller 409, custom intake manifold, etc.), and I'm VERY much happier with $59, $42, $85, and similar.

    The upper and lower VE tables thing is for the birds, constantly switching back and forth to try and get a tune that runs decently clean, or lean is just way more involved than it needs to be.

    I haven't figured out how to tune AE really, I think I got it working the way I want, but simple adder tables are MUCH easier to understand than multiple AE multiplier tables.

    I really don't understand why people rave so much about $8D/S_AUJP.
    The man who says something is impossible, is usually interrupted by the man doing it.

  9. #474
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    i never really got into 8D either.... seems like GM dropped the ball with it when it came to drivability. the 7165 masks weren't much if any better either. they just seem too minimalist.

    it's why i chose A1 to base my custom stuff off of.
    1995 Chevrolet Monte Carlo LS 3100 + 4T60E


  10. #475
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    SRV gone 22 years. :( Had to pull off the road and sit when crash was reported.

  11. #476
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    Quote Originally Posted by 1project2many View Post
    SRV gone 22 years. :( Had to pull off the road and sit when crash was reported.
    You had a crash?

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  12. #477
    Fuel Injected! gregs78cam's Avatar
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    I was curious as well so a quick google search, Stevie Ray Vaughan, helicopter crash 22 years ago today.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  13. #478
    RIP EagleMark's Avatar
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    OK makes sense...

    Greg there's one of those little Honda cars for sale corner of Seltice and Atlas... Nice looker!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

  14. #479
    Fuel Injected! gregs78cam's Avatar
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    Yea I saw that one, not too bad, a little rusted out, no interior.
    1978 Camaro Type LT, 383, Dual TBI, '7427, 4L80E
    1981 Camaro Z-28 Clone, T-Tops, 350/TH350
    1981 Camaro Berlinetta, V-6, 3spd
    1974 Chevy/GMC Truck, '90 TBI 350, '7427, TH350, NP203, 6" lift, 35s

  15. #480
    RIP EagleMark's Avatar
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    See what I have to put up with all day?

    Best dog I have ever had and have had dogs since the day I was born... and he was given to us a year ago when he was 1.

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    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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