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Thread: Best 3 Bar - 4L80E OS to use?

  1. #1

    Best 3 Bar - 4L80E OS to use?

    We have a 2001, GMC, Sierra, 1500, 2wd, Cable TB that we are looking to put a 3 Bar MAP on. Does anyone know of a good operating system we can use, or have a file already built for this combo that we can start with. Our current OS is not compatible with 3 Bar.

    Thanks
    Sean

  2. #2
    Tuning Addict 5FDP's Avatar
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    Alot of the 12212156 OS's from 2002 Silverado's have 3 BAR with RTT if you want to use them. Of course you'd have to use 2 credits to license another file. Then after that you could find a 2002 Silverado 2500 tune with the same OS and use the segment swap feature for the 4L80e.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Great, thanks. I will see if I can find one. Is there a specific MAP part number that works well for 3 bar also?

    Thanks
    Sean

  4. #4
    Tuning Addict 5FDP's Avatar
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    EFI source sells a plug and play 3 bar map.
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  5. #5
    Awesome, we haven't used them before. I will take a look.

    Thanks again..
    Sean