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  1. Thanks for all the suggestions. Will fire up the...

    Thanks for all the suggestions. Will fire up the wideband, make some tweaks mentioned here and see if I can clean a few things up. Then will likely spring from some bigger injectors. If I ended...
  2. 03 RCSB Z06 Cammed 4.8/NV3500, Injector Duty ~110% - upgrade?

    My son and I installed an 01 Z06 Cam in his RCSB about 10 yrs ago...he decided to upgrade to a new car a few years ago and I elected to keep the truck - an '03 RCSB 4.8/NV3500. Not too many...
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    +1 Incredible engine, love mine!

    +1 Incredible engine, love mine!
  4. TY - I was looking at the crank relearn scan and...

    TY - I was looking at the crank relearn scan and those codes don't show up...odd. They are there on the startup where the car was violently backfiring. Going to swap #7 coil and determine issue...
  5. Latest Logs and Tune File

    Latest Logs and Tune File
  6. Apologies, I let the scanner gather the available...

    Apologies, I let the scanner gather the available PIDs and deleted anything that was grayed out. I will re-add manually and see if there is simply no data being reported. My question should have...
  7. What would cause this? TY for the reply.

    What would cause this? TY for the reply.
  8. LS Swap, '57 Chevy, misfires, pops, see issue in scanner, need some guidance...

    Trying to help a buddy with an LS swap '57 Chevy.
    Junkyard 04 GTO LS1

    UPDATE

    Car refuses to idle and still backfires. I logged misfires by cylinder and see a large number on #7 and some on...
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    Any update - about to trade the L5P (essentially...

    Any update - about to trade the L5P (essentially buried treasure) for a gasser. Need headers, cam and tune...and maybe gasp! turbo!
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    Dumb question... '18 Explorer shows not...

    Dumb question... '18 Explorer shows not supported. Appears you guys are tuning them? Beta? Thanks!!
  11. Old Dog HPT Guy...Any timeline on Explorer Sport 3.5 Ecoboost 17-19??

    Thanks for any guidance...
  12. Stock '03 Sierra 4.8/NV3500 Tune

    Just saw this thread hoping for help in cleaning up some misfire codes on my '03 Sierra 5-speed. Hope this helps the OP.
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    Sorry I was referring to the stock timing tables...

    Sorry I was referring to the stock timing tables in the tune at WOT.
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    Flex Fuel Timing...2015 L83

    '15 Sierra, didn't come with Flex Option.

    Installed Sensor and Enabled.

    I'm currently using stock timing tables across the board but would like to optimize for 93 as well as flex.

    Two...
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    Kinda same here...compared the 93 Firm shift on...

    Kinda same here...compared the 93 Firm shift on my L83 truck, pretty simple changes.
  16. Thread: E85 ready?

    by Closer_2001
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    Just the questions I wanted to ask...I'm using...

    Just the questions I wanted to ask...I'm using the High Octane Spark tables from a Canned Tune I bought. Is the added timing in the Alcohol table too much? Is this where most people get the added...
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    Apologies if bumping an old thread. I'm in the...

    Apologies if bumping an old thread.

    I'm in the process of enabling e85 sensor and adding the correct parameters on an L83 Non-Flex Fuel Sierra.

    In comparing a stock Flex Fuel tune, two things...
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    Less timing and tr6 plugs at a high level

    Less timing and tr6 plugs at a high level
  19. Thread: VVT Tables

    by Closer_2001
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    Results? My buddy and I tuned his 2010 Sierra...

    Results? My buddy and I tuned his 2010 Sierra 5.3 this past weekend and I could only get 18* timing advance without KR in the main tables. The VCP was zeroed out. Anything past 18 caused audible...
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    If you want FI, do that with Meth, no reason...

    If you want FI, do that with Meth, no reason without.

    You could probably fill it with E85 and get the same gains and get your E85 tables tuned for max use of the fuel. <Flame Suit On>

    As...
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    Mike at Gforce shared the same thing with me on...

    Mike at Gforce shared the same thing with me on my 09 CTS-v

    Roll into it to avoid burst knock.

    I say drop some 100 unleaded race gas and see if it improves.
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    You might try performancetrucks.net on this, lots...

    You might try performancetrucks.net on this, lots of FI discussion there.
    My 4.8 with a cam is probably at 6x% at 12.5 AFR.
    You will need way more fuel moving at much air would be my expectation.
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    Please post tune and logs if you have one. Thnx

    Please post tune and logs if you have one. Thnx
  24. Pm sent thnx!

    Pm sent thnx!
  25. Tune File Request - not in HPT Repository

    Stock 2012 GMC Sierra 6.2 6a. Thanks.

    5.3 is there, not the 6.2.
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