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Thread: Help with base tune?

  1. #11
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    Finally got the truck to idle on its own by playing with the idle airflow. Took it for a short drive but it wants to die when coming to a stop. I can't start the auto ve process until i get this fixed obviously. Attached a tune and log file. I'm having knee surgery tomorrow so i'll be down on the couch for a week or so. That will give me time to read up more on EFI Live.
    Attached Files Attached Files

  2. #12
    Joe (Moderator) joecar's Avatar
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    Hope your surgery goes well.

  3. #13
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    This was a nice read and i think it's awesome these guys are willing to help you out. I'm also new to this and have just received my EFI kit and have no idea where to start with a custom o.s / base tune! If you ever get bored on the couch i'd love to chat! If i can be of any help i will and hope you get her running well soon. Cheers, Charlie

  4. #14
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    Thanks guys. I dont know much but I did upgrade to a custom o/s and have got it running. So I know a tiny amount

  5. #15
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    Any ideas guys? Ran the RAFIG and RAFPN today which helped the idle out. Truck still drops very low in the RPM range when coming to a stop and wants to also almost die when the fans/a/c comes on. I played with the fan airflow table which helped, but i wasn't sure how far to go. Here is my latest tune/log file. I also noticed that my TPS is always reading 14-19% at idle. Is that normal?
    Attached Files Attached Files

  6. #16
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    I've also noticed to guys that if i use the DVT tab to engage the a/c or turn on the fans the truck wont really want to die. But if i let the truck do those on its own it will. I also assume my TPS issue is because i'm using the wrong PID.

  7. #17
    Joe (Moderator) joecar's Avatar
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    VE table B0101 looks incorrect in the low rpm rows.

  8. #18
    Joe (Moderator) joecar's Avatar
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    Log shows that PE is having a hard time kicking in.

  9. #19
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    Idle dropping in decel can usually be addressed in the throttle cracker table. Assuming AFR is solid and base running airflow is correct.
    00 Silverado Z71, LQ9 w/ LS3 heads, BTR cam, Whipple 2.9@8#, 4l80E

  10. #20
    Joe (Moderator) joecar's Avatar
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    +1 throttle cracker as LastCall said.

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