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Thread: Flex fuel OS for LS1 PCM

  1. #1
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    Default Flex fuel OS for LS1 PCM

    Does anyone have a stock tune file for a 12216125 OS or any other OS that I can use for flex fuel in a LS1b PCM.

  2. #2
    Joe (Moderator) joecar's Avatar
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    See if you can find it in here: Tunefiledepot-has-been-replaced

  3. #3
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    Quote Originally Posted by joecar View Post
    See if you can find it in here: Tunefiledepot-has-been-replaced

    Cheers Joe, didn't realise tune file depot had been replaced that's awesome news, will have a look

  4. #4
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    Yep found it in there thanks again joe. Does anyone know if there is a flex fuel enabled GM OS that is also custom OS enabled for boosted applications.

  5. #5
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    Yes, but I dont believe for 512kb LS1 PCMs with EFILive. You'd have to go to 03-05 1MB LS1B PCM to get that.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, starting the mods
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

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    Do you have a OS Number? Or what year and vehicle it came out of. The PCM I have is a LS1B as far as I know. From a 2003 VY commodore

  7. #7
    Lifetime Member Tre-Cool's Avatar
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    get a vz ls1 1mb ecu, then you can run e85 compatible os.

    I'm pretty sure i have posted a base tune on the forum here already with e85/custom os

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  9. #9
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    ok so the VY PCM isn't a LS1B? That sucks, might have to source one for mine as it will be boosted the other car I'm doing is a Holden 355 running the LS pcm using a low frequency trigger.

  10. #10
    Lifetime Member Tre-Cool's Avatar
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    it still a ls1b ecu, but it's called a p59.

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