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Thread: Can Speed Density 3 bar, be easily returned back to "Normal" MAF/VE setup?

  1. #1
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    Question Can Speed Density 3 bar, be easily returned back to "Normal" MAF/VE setup?

    Car is a 2000 Trans Am with a 2002 Silverado PCM...I guess because car has/had a 6.0 and 4L80E and it may have been a way around or something??

    I do NOT have the stock, original file. Car was built, and tuned by someone (unknown) long before I took possession.

    Car WAS turbocharged, but now it is NOT...so I have absolutely no need to run a 3 bar SD setup.

    Anyway, it has a 3 BAR SPEED DENSITY (RTT) OS now, and I have TWO questions regarding that...

    1.) Since this is a SPEED DENSITY specific operating system, I "assume" the MAF is hard coded OUT of the equation???...if that is not the case, should/would/can I simply RE-ENABLE the MAF settings, if I wanted to run a MAF meter now???

    if NOT,

    2.) Can I do a WRITE ENTIRE or something, to go back to a traditional MAF/VE setup??? (again, I do NOT have original file)

    The reason for these questions, is that turbo is long gone, and I have tried, unsuccessfully to run a conventional MAF/VE setup using what I have.


    Here is what I currently have....
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    2000 Trans AM WS6 6.0, 4L80e, 9"
    2008 Silverado LT 5.3 liter Work Beater


  2. #2
    Senior Tuner Ben Charles's Avatar
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    Yes you can

    Email Tunes, [email protected]
    96 TA Blown/Stroked, 4L80E/Fab 9
    15 C7 A8 H/C 2.3 Blower/PI
    14 Gen 5 Viper
    Custom Mid Engine chassis, AKA GalBen C

  3. #3
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    Quote Originally Posted by Ben Charles View Post
    Yes you can
    I can...............what?

    The MAF, when enabled, does not function properly, ie; afr is all over the place, chasing my tail.

    I'm trying to determine if there is another issue.

  4. #4
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    Either write entire a stock file from the repository of have someone with a tech2/MDI type device and SPS subscription to flash a stock OS back onto it.

    The gen3 custom OS stuff does not use the MAF as far as I am aware. The gen4 custom OS can still use it.
    JTC Performance - Authorized HP Tuners Reseller
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  5. #5
    Senior Tuner Ben Charles's Avatar
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    You can write it back to a stock OS

    I have had success using MAF on the custom SD gen 3 operating system as well (even though it says SD only)

    Email Tunes, [email protected]
    96 TA Blown/Stroked, 4L80E/Fab 9
    15 C7 A8 H/C 2.3 Blower/PI
    14 Gen 5 Viper
    Custom Mid Engine chassis, AKA GalBen C

  6. #6
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    Thanks for the replies guys.
    2000 Trans AM WS6 6.0, 4L80e, 9"
    2008 Silverado LT 5.3 liter Work Beater


  7. #7
    Tuning Addict 5FDP's Avatar
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    I've run the MAF in a upgraded speed density OS before too.
    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.