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Thread: Tunning help please

  1. #1
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    Default Tunning help please

    I just did engine swap from a 5.3 to 5.7. I'm having issue with costom 5.7 tune i made up. The truck fire and pops to grand and then stombles intill it dies. If you feather the trottle it will run longer but just stombles. So for kick I load my turbo 5.3 tune and fire right up with no issues but did lean because not the right tune. So here is the tune i made up. Here is the specs for the motor. 2000 LS1 with LS6 cam, 9.2cr with 60lb injectors, 317 heads, and t70 front mounted turbo. Thanks for the help guys.
    Attached Files Attached Files
    2006 Trailblazer SS
    Twin Turbo 67 Chevy Truck
    SOLD Truck 2002 Chevy kb turbo t70 5.7l

  2. #2
    Lifetime Member 5.7ute's Avatar
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    Do you have a log with this happening?
    Have you tried lowering the VE table in the idle areas to ensure idle isnt too rich? (Thats what it sounds like with throttle keeping it alive longer)
    Also I would populate the IAT VE multiplier table with 1.0 where you want to set your base.(I leave the whole table at 1.0 for starters, and populate it from data later)
    The Tremor at AIR

  3. #3
    Lifetime Member 5.7ute's Avatar
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    Also I notice you have only calibrated for a 1bar map sensor. To fully utilise this OS you should fit a 2 or 3 bar sensor.
    The Tremor at AIR

  4. #4
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    Quote Originally Posted by 5.7ute View Post
    Also I notice you have only calibrated for a 1bar map sensor. To fully utilise this OS you should fit a 2 or 3 bar sensor.
    Yes you are right it should be set up for 2 bar. Can you tell me what table is so can copy the setting from old 5.3 tune. I will lower the ve table in the ideal area to see if that helps. It's to late to start it with open down pipe right now.
    2006 Trailblazer SS
    Twin Turbo 67 Chevy Truck
    SOLD Truck 2002 Chevy kb turbo t70 5.7l

  5. #5
    Lifetime Member 5.7ute's Avatar
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    C6301. If this is incorrect you will be in the wrong VE cell at idle. Dont worry about reducing the VE table until you have tested with the right values here.
    The Tremor at AIR

  6. #6
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    Quote Originally Posted by 5.7ute View Post
    C6301. If this is incorrect you will be in the wrong VE cell at idle. Dont worry about reducing the VE table until you have tested with the right values here.
    I was compairing my 5.3 v.e table tune to my 5.7 and they realy close in the ideal area. I hope this fix the issue by fixing the C6301 table.
    2006 Trailblazer SS
    Twin Turbo 67 Chevy Truck
    SOLD Truck 2002 Chevy kb turbo t70 5.7l

  7. #7
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    Changed the setting and will report back tomorrow.
    2006 Trailblazer SS
    Twin Turbo 67 Chevy Truck
    SOLD Truck 2002 Chevy kb turbo t70 5.7l

  8. #8
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    Did you change the displacement in the tune? Newbie mistake I made once.
    00 GMC,LQ4, Jarrett Faggart pistons, callies rods, Ebay studs, LS9 gaskets, 317's, KBRacing KIT, PT76/75, treadstone intercooler,Eboost2, dual walbro, FIC 75lb, br7ef, Trutrac, Shaftmasters Shaft, 3.5" DP w/4" magnaflow dumped, turbo blanket, Circle D 3200, Jake's built 4l80w/brake, hydroboost, EFILive v2,Lunati dual springs,222/226 cam, cal-tracs, QA1 front shocks, Street/strip Bogarts,Drum swap, Alky-control,MSD8733 936 HP to the tire DD.

  9. #9
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    Quote Originally Posted by 5.7ute View Post
    C6301. If this is incorrect you will be in the wrong VE cell at idle. Dont worry about reducing the VE table until you have tested with the right values here.
    5.7ute thanks for the help. I changed the c5501,c5502,c6301,c9302 for a 2bar set-up and the truck started just fin. Need to tune ve table littel bit.
    Thanks for pointing out.
    2006 Trailblazer SS
    Twin Turbo 67 Chevy Truck
    SOLD Truck 2002 Chevy kb turbo t70 5.7l

  10. #10
    Lifetime Member 5.7ute's Avatar
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    No worries. Sometimes a second set of eyes is all that's needed.
    The Tremor at AIR

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