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Thread: Tuning on the LLY

  1. #1
    Join Date
    Mar 2000
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    Loyal WI US
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    So after playing with EFI Live for a bit I've made some pretty decent progress. While I did write a big race tune, I also made some lesser HP tow safe tunes that should really do well. The Performance-tow tune shown below actually has VERY little added fuel in it while the economy-tow has even less yet. These aren't going to win any performance awards, BUT we need to stay below the 700 lb/ft mark for the stock transmission. You'll notice that both tunes finish harder than the stock tune which rolls off hard as RPM's climb. This should help nicely against those pesky stoplight racers etc...


    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  2. #2
    Join Date
    Mar 2000
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    Here's the race tune in it's present form. I'm still honing it, but it works quite well so far:

    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  3. #3
    Join Date
    Jan 2005
    Location
    Southern Indiana
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    Sweet tunes. Is that w/just the efilive or w/ any other mods (boost stick, intake, etc....)

  4. #4
    Join Date
    Mar 2000
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    Otherwise stock except for the EFI Live/KD exhaust.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  5. #5
    Join Date
    Dec 2004
    Location
    Texas
    Posts
    683

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    I wondered how long it would take you. I'm impressed. I thought of downloading the software, but not really knowing what needed changing where and what its affect might be until it was tried, stopped me. I don't have a dyno like you do. So is the idea to burn these to a CD and sell to those with a lap top, or are you going to offer a download to a scan2. What are your thoughts. I know not everyone has a lap top with the proper connections, let alone a scan2. An enterprising guy like yourself might just offer a complete package with downloads from your web site as you tweek and store the programs and let us try and see what feels the best for our particular situation. I would think one would want with stock trans, a tow program, an running empty ultra fuel mileage, and a performance for saturday night drags. With a stage 5 SC who knows what one might want? I see a lot potential. If I wans't so busy....Am I thinking on the right track here?
    02 2500HD LT D/A SB CC 4X4 BLACK, Westin stainless nerf bars, BW GN Hitch,Racor 60S post oem fuel filter, Oil Guard bypass engine oil Filter. All synthetic fluids. Kennedy boost valve, edge, Modified air intake,EGT & Boost digital gauge,TransferFlow combo fuel & tool box, Air Lift Suspesion Bags Rear & compressor with remote, Bilsteins front & rear, Frontier front replacement bumper.

  6. #6
    Join Date
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    At this point in time I'll be doing exchange ECM's. They will be switchable bewteen A and B tunes. This is the only way to keep the tunes proprietary for now.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  7. #7
    Join Date
    Dec 2001
    Location
    Sharpsburg, GA, USA
    Posts
    218

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    I am very happy with John's tune on the LLY. Runs very strong and I am hoping for a great showing at the Suncoast dyno event.
    2002 LB7 D/A 2WD. Suncoast Stage V. KD EFILive Tuned, KD N2O, KD 40 Over Injectors, MDP Custom Fuel System, KD MEGA Filter, BD Turbo

    2005 LLY D/A 2WD. KD Headlight Booster, KD 4/5 Exhaust, Suncoast Stage V, KD EFILive Tuned.

    LB7:12.8@108 #2 Only 11.92@115.62 #2W/N20
    LLY: 471HP & 990 TQ 13.58@100.57

    [URL=http://www.youtube.com/watch?v=mH_RfHGgKUk]Boosted![/URL]

    [url="www.bmdmax.com/index.html"]Truck Website[/url]

    [URL=http://www.bmdmax.com/downloads/semc-2.wmv]Chasing 11's Video[/URL]

    [url="www.kennedydiesel.com"]Go Fast Goodies Powered by Kennedy Diesel[/url]

    11 Second 2WD Crew Posse Member!! Got Slicks?

  8. #8
    Join Date
    Mar 2000
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    Loyal WI US
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    Be sure to take your laptop with you. I'll be on the dyno Friday and may have something worth trying...

    ALMOST makes the LLY drive like the LB7 doesn't it?
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  9. #9
    Join Date
    Dec 2001
    Location
    Sharpsburg, GA, USA
    Posts
    218

    Post

    I sure get that nitrous like smile when that 1000 foot pounds of torque ramps in.....

    It made driving home in the rain the other day very entertaining. I really had to resist the urge to do some donuts with it like some silly high school kid...
    2002 LB7 D/A 2WD. Suncoast Stage V. KD EFILive Tuned, KD N2O, KD 40 Over Injectors, MDP Custom Fuel System, KD MEGA Filter, BD Turbo

    2005 LLY D/A 2WD. KD Headlight Booster, KD 4/5 Exhaust, Suncoast Stage V, KD EFILive Tuned.

    LB7:12.8@108 #2 Only 11.92@115.62 #2W/N20
    LLY: 471HP & 990 TQ 13.58@100.57

    [URL=http://www.youtube.com/watch?v=mH_RfHGgKUk]Boosted![/URL]

    [url="www.bmdmax.com/index.html"]Truck Website[/url]

    [URL=http://www.bmdmax.com/downloads/semc-2.wmv]Chasing 11's Video[/URL]

    [url="www.kennedydiesel.com"]Go Fast Goodies Powered by Kennedy Diesel[/url]

    11 Second 2WD Crew Posse Member!! Got Slicks?

  10. #10
    jjgmc Guest

    Post

    John is this the same tune you had when Aaron and I rode in your truck?

  11. #11
    Join Date
    Mar 2000
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    Loyal WI US
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    No, that one was quite a bit less power than this one....
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  12. #12
    Join Date
    Mar 2000
    Location
    St. George, Utah.
    Posts
    980

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    John:
    I was reading on the other place that a certain person is concerned and is stirring up quite a todo about the dowel pins in the crank pulley stub and the cam drive pulley stubs. Do you have any concerns about your high horsepower and torque production in regards to these pins shearing or near shear off causeing a shift in cam timeing or a catostrophic failure or is this a cry of wolf?
    Denny
    2018 GMC Denali HD 2500 L5P.

  13. #13
    Join Date
    Jan 2005
    Location
    Southern Indiana
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    I've sheared the cam dowls in big HP gas engines and now double dowl them, but I don't think these low rpm engines need'em. I've never heard of anyone twisting a gear off in a duramax so I'm calling it a wolf cry.

  14. #14
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    I think that it could well be very serious issue/defect in our engines, but how many will actually fail remains to be seen. Probably very few. I won't lose sleep over it, but it is a concern and something I would definitely address if I were in a teardown situation.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  15. #15
    Join Date
    Jan 2005
    Location
    Southern Indiana
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    upon further investagation into the concern I must say I was amazed at what I saw. I've never seen one that jacked up. I think a better fix would be to add a second dowl. I don't like keys. I wouldn't tear an engine down to check it out but if I had it out already..... I know when these fail in gas engines they make a serious mess.

  16. #16
    Join Date
    Dec 2002
    Location
    Southern California
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    86

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    Great job John!
    <a href=\"http://www.socaldiesel.com\" target=\"_blank\">www.socaldiesel.com</a><br />2003 Chevy 2500HD LT D/A 4x4, Crew/LB<br />Bilsteins, Rhino Nerf Steps, BFG 285s on American Eagle chrome 145s, \"Hot Attitude\"<br /><a href=\"http://community.webshots.com/user/gtripp41\" target=\"_blank\">My Stuff</a>

  17. #17
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    Mar 2000
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    Thanks Guy,

    The LLY finally runs and responds like a Hot Juiced LB7 only less smoke and even a bit more responsive with a earlier TQ peak.

    The real beauty is that you can hardly tell the difference between the Race tune and the lesser units until you really call for the power. We'll be getting the switchable setup to Brandon soon although from the sound of it, He/Dayle will seldom use anything but the high HP tune.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  18. #18
    Join Date
    Jan 2002
    Location
    Illinois
    Posts
    42

    Post

    I currently have about 400 miles of windshield time running JK
    02 3500 D/A/CC/4x4 Indigo Blue, Amsoil bumper to bumper w/bypass, Line-X, Extang Black Max tonneau cover, Kennedy 4 light conversion w/phillips bulbs, Dynomax 4\" muffler, 4.61 HOT Juice

  19. #19
    Join Date
    Mar 2000
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    Loyal WI US
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    We put Brandon er uh Dayle up at 471RWHP at Suncoast this past weekend with this tune! Not bad, beat the heck out of everything but the big mod stuff!
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  20. #20
    Join Date
    Feb 2005
    Location
    USA
    Posts
    70

    Post

    When are you going to run it at the track?

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