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Thread: Intake map readings

  1. 11-17-2023 #1
    Rod knockers
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    Intake map readings

    Hi all I'm a newbie here, just learning about tuneing. I have a 2011 gmc sierra 1500 5.3 flex. I recently installed long tube headers, borla exhaust, k&N cold air intake, jet throttle body, and a jet maf sensor. My question is what is a good map reading in inHG with key on engine off and with engine on in idle? I'm in Florida basically at sea level. Barometric pressure is 102 kpa. My readings currently have:

    Key on engine off: 29.8 inHg
    Engine running park: 11.9 inHg

    Thanks in advance for any assistance
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  2. 11-17-2023 #2
    crew chief
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    Change it to read in kpa if that is what you prefer but koeo is pretty much bang on 101kpa
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  3. 11-17-2023 #3
    Rod knockers
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    Quote Originally Posted by crew chief View Post
    Change it to read in kpa if that is what you prefer but koeo is pretty much bang on 101kpa
    Perfect thank you for the fast reply. I changed it to Kpa and it's reading 101 koeo
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