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Thread: E40 Operating System

  1. #1
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    E40 Operating System

    I have had HPT for almost a week and I love it but I am starting from scratch. On my 2006 GTO w/ an e40, I click on OS and this is what I see;

    General
    LS2 MAF Freq Patch = Patched 15000k
    TCS Patch = Applied
    VATS Patch 1 = Enabled
    VATS Patch 2 = Enabled

    Is this what I should see? The reason for my confusion is because my car is tuned Speed Density, there is no MAF on my car. It was tuned a few years ago and runs great. The "LS2 MAF Freq" is what is throwing me off. In the OS I was expecting to see something like "Speed Density 2 BAR" or something like that. I have done a ton of research and learned what the "MAF Freq Patch = Patched" means which only added to my confusion because why does it need a 15000K Freq Patch for the MAF if there is no MAF!? Thats sort of a rhetorical question. Further more I learned what "TCS Patch = Enabled" means too, which indicates that it is Speed Density... Is my OS correct? Am I truly Speed Density? Is my tune whack?

  2. #2
    Tuning Addict 5FDP's Avatar
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    Some OS's don't offer a speed density upgrade like that.

    Post your tune file.
    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
    Tuning Addict blindsquirrel's Avatar
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    It already has the 2-bar custom OS applied. Once a COS is applied to a file any other custom OS options are no longer available in the OS tab. (but this one will only have that one option anyhow)

  4. #4
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    Thanks guys

  5. #5
    Tuning Addict blindsquirrel's Avatar
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    The tune file is gone now - I wanted to double check but from memory, the MAF is not failed correctly.

  6. #6
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    bbs tune

    bbs tune
    Attached Files Attached Files

  7. #7
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    Its back up, thank you. Do you tune a lot?

  8. #8
    Tuning Addict blindsquirrel's Avatar
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    Is this an LSA blower? LSA's original 2-wire IAT sensor in the lid?

  9. #9
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    Procharger, we took 2 wires from the MAF and used them for a GM IAT sensor located before the throttle body.

  10. #10

  11. #11
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    Good looking out, thank you.