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Thread: Car won't idle

  1. #1
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    Car won't idle

    My car was idling perfect, then the next day it stopped. No matter what, I've been unable to get it to idle again. The setup consist of a 6.0 iron block 414 stroker, LS3 heads and intake, NW 92mm throttle body, stock LS3 injectors, cam specs are, 251/259 @ .50 660/663 111 lsa.
    Last edited by NSTYC5; 02-27-2012 at 07:52 PM.

  2. #2
    Senior Tuner edcmat-l1's Avatar
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    Yeah, good luck with that. That tune is full of badness.

    ETC scalar of 1? Really? And the VE table, and MAF table, and the long term fuel trims are still on, and on and on.

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    Quote Originally Posted by edcmat-l1 View Post
    Yeah, good luck with that. That tune is full of badness.

    ETC scalar of 1? Really? And the VE table, and MAF table, and the long term fuel trims are still on, and on and on.

    Will look @ it, my buddy sat in the car with the laptop, I didn't think he fooled with all that. I went the next day to crank it and was like wtf?

  4. #4
    Advanced Tuner oakley6575's Avatar
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    Who tuned this?
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  5. #5
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    Quote Originally Posted by oakley6575 View Post
    Who tuned this?
    Obviously my buddy tried his hand @ it, I'm going to start over from scratch.

  6. #6
    Advanced Tuner oakley6575's Avatar
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    He didn't even start with a 6.0L tune.
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  7. #7
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by oakley6575 View Post
    He didn't even start with a 6.0L tune.
    Yep it's still 5.7 displacement.Tune is not good at all. Not even a good starter tune.

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  8. #8
    Advanced Tuner oakley6575's Avatar
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    You need to find the correct injector data. I don't know where you came up with those numbers. I would pull a stock 6.0L tune off the respiratory and go from there.
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  9. #9
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by oakley6575 View Post
    You need to find the correct injector data. I don't know where you came up with those numbers. I would pull a stock 6.0L tune off the respiratory and go from there.
    Why? There's nothing 6.0 about it but the block. He would be better off pulling an LS3 file, that way he would have the correct injector data.

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  10. #10
    Advanced Tuner oakley6575's Avatar
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    A gen4 tune will work on a gen3 computer?
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  11. #11
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by oakley6575 View Post
    A gen4 tune will work on a gen3 computer?
    No, you'll have to recalculate some of the figures. But, the 6.0 liter tune is of no use.

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  12. #12
    Advanced Tuner oakley6575's Avatar
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    Quote Originally Posted by edcmat-l1 View Post
    No, you'll have to recalculate some of the figures. But, the 6.0 liter tune is of no use.
    can you elaborate more on your thinking. Are you saying he should take the LS3 tune and make it Gen3 compatible. I haven't heard of that before. Or are you saying he should keep the 5.7L tune he started with and work off that?
    Last edited by oakley6575; 02-27-2012 at 09:03 PM.
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  13. #13
    Senior Tuner edcmat-l1's Avatar
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    Quote Originally Posted by oakley6575 View Post
    can you elaborate more on your thinking. Are you saying he should take the LS3 tune and make it Gen3 compatible. I haven't heard of that before. Or are you saying he should keep the 5.7L tune he started with and work off that?
    No, just use it for the injector data. Or searh around, there's a spread sheet someone made up to convert LS3 data into the LS1 format.

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  14. #14
    Advanced Tuner oakley6575's Avatar
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    Yes I used that spreadsheet in my own build. Still don't understand why he wouldn't start with a 6.0L stock tune. I'm just here to learn.
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.

  15. #15
    Tuner smokestack's Avatar
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    Quote Originally Posted by oakley6575 View Post
    can you elaborate more on your thinking. Are you saying he should take the LS3 tune and make it Gen3 compatible. I haven't heard of that before. Or are you saying he should keep the 5.7L tune he started with and work off that?
    I would imagine because the heads throttle body and intake.... And injectors are all LS3. Most key components

  16. #16
    Advanced Tuner oakley6575's Avatar
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    Quote Originally Posted by smokestack View Post
    I would imagine because the heads throttle body and intake.... And injectors are all LS3. Most key components
    OP is running a gen 3 computer. Do you think you can run a gen 4 tune on a gen 3 computer? That would have saved me some tuning time. But I don't think it's an option.
    2003 Chevy Silverado Daily Driver, 408 Iron Block,
    LS3 Heads/Intake, 231/239 114, 4L80e, Yank SST 3200.