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Thread: Barometric Pressure being logged at twice the actual pressure

  1. #1
    Tuner
    Join Date
    Oct 2019
    Location
    ATL
    Posts
    55

    Barometric Pressure being logged at twice the actual pressure

    I've noticed in recent datalogs that the Barometric Pressure is being recorded at twice the actual pressure. As a result, the PR table never reads any row greater than the .90 and .98 rows.

    What could be causing the BP to be measured and recorded at twice that of actual?

    Tune and sample log attached
    Attached Files Attached Files

  2. #2
    Advanced Tuner
    Join Date
    Nov 2017
    Posts
    815
    Disable baro learn - 2101.
    If in doubt, multiply everything by 1.1.

  3. #3
    Tuner
    Join Date
    Oct 2019
    Location
    ATL
    Posts
    55
    cool thanks.....

    [ECM] 2101 - Barometric Pressure Learning Enabled: Indicates if barometric pressure is learned. Typically the learning algorithm uses MAP at WOT to estimate barometric pressure.

    so if I'm supercharged the Baro Learn will think the boost pressure at WOT is atmospheric pressure.... makes sense now!

    thank you!
    Last edited by rich s; 02-07-2020 at 02:52 PM.