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Thread: Getting P0103, high flow heads, headers, big cam. Would that effect my Mass Air?

  1. #1
    Potential Tuner
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    Mar 2020
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    Tucson, AZ
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    Getting P0103, high flow heads, headers, big cam. Would that effect my Mass Air?

    2005 corvette, big cam, high flow heads, long tube headers... Keep getting a P0103 I've cleaned the mass airflow sensor, yet 2 mins after starting I get the code.....Any ideas. Newbie with my tuner, MPVI2, but read 3-4 hours a night... love this stuff!!!
    Thanks Jeremy

    Wish my wideband would arrive!!!!!

  2. #2
    Senior Tuner
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    Mar 2011
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    Ripley, MS
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    Quote Originally Posted by MegaRexx View Post
    2005 corvette, big cam, high flow heads, long tube headers... Keep getting a P0103 I've cleaned the mass airflow sensor, yet 2 mins after starting I get the code.....Any ideas. Newbie with my tuner, MPVI2, but read 3-4 hours a night... love this stuff!!!
    Thanks Jeremy

    Wish my wideband would arrive!!!!!
    Make sure that the MAF isn't turned around backwards. Post the tune and a datalog when you can and we can properly diagnose the problem.

  3. #3
    Potential Tuner
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    Mar 2020
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    Tucson, AZ
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    I do have the flow direction right, double checked.... tune uploaded here. I named it "as bought tune" as the car already had a tune in it by someone else....

    Picked up a new MAS today, and my wideband came in!!! Whooohoooo....
    Attached Files Attached Files
    Last edited by MegaRexx; 04-03-2020 at 09:12 PM.