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Thread: Fitech Manifold Map Sensor?

  1. 03-17-2021 #1
    SLEEPYDUB
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    Fitech Manifold Map Sensor?

    Customer has a Fitech intake manifold with the map sensor on the back. The way he has it setup now it has a GM 3bar map sensor, but added some janky o ring to it so it would fit the hole. Without the o ring it doesnt seal. We have been getting some erratic map sensor readings, and noticed the o ring he used has a slit in it, possibly causing a leak.

    What is the solution here? Its a Gen 3 P59 ecu, factory map sensor connector.
    Also, in HP Tuners he has the map sensor scaled very strange from what a normal 3bar should be I believe?
    His scale is 440kp/10.33. Doesn't that see off?

    Thanks for the help
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  2. 03-17-2021 #2
    5FDP
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    What GM 3 bar sensor is it, what part number?


    The most common values are 305/10.33 and 312.50/-11.25 for the CTS-V/ZL1 3 bar sensor from GM.
    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.
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  3. 03-17-2021 #3
    kevin87turbot
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    That calibration isn't correct for a 3 bar MAP sensor.
    What is the MAP kPa with engine off?
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  4. 03-17-2021 #4
    SLEEPYDUB
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    I'll have to get the part# tomorrow. We are putting in a 12614973, but the one that came out has a different part# yet is identical body.

    It sits at 98kpa engine off, we're at sea level
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  5. 03-18-2021 #5
    SLEEPYDUB
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    Quote Originally Posted by 5FDP View Post
    What GM 3 bar sensor is it, what part number?


    The most common values are 305/10.33 and 312.50/-11.25 for the CTS-V/ZL1 3 bar sensor from GM.
    Part# he is currently using is 12623671.
    Does he just need to use the LS9 map sensor and the LS3 to LS9 map sensor harness adapter?
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