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Thread: Wiring a GT500 MAP Sensor into Coyote Harness

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    Senior Tuner CCS86's Avatar
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    Wiring a GT500 MAP Sensor into Coyote Harness

    Does anyone know if it is possible to take an OEM GT500 MAP sensor, wire it into the factory location on a Coyote harness, then log that as a normal PID with VCM Scanner?

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    Being as they don't have one, I doubt it.

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    Senior Tuner CCS86's Avatar
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    Quote Originally Posted by MRRPMBRP View Post
    Being as they don't have one, I doubt it.
    Doh, I have been misinformed.

    So, no Copperhead based engines have used a factory MAP sensor?

    I'm wondering why Ford went to such lengths to calculate MAP instead of measuring it.

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    No, what I meant was to wire it into the MPVI and log that

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    Quote Originally Posted by C_Murph12 View Post
    No, what I meant was to wire it into the MPVI and log that
    This is what I did, works good, no issues, log as it's coming from the car.

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    Which sensor did you use MRRPMBRP?

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    Just a Bosch, this one:
    https://www.bmotorsports.com/shop/pr...k5avnqcvivnep4

    Made a block of aluminum to bolt it to, then ran a vacuum hose to it, after blower to see vac/boost. Picked up a +5v power from another sensor that's on top of the motor.

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    Senior Tuner CCS86's Avatar
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    Quote Originally Posted by C_Murph12 View Post
    No, what I meant was to wire it into the MPVI and log that

    I don't have the pro version, so I can't log extra sensors.

    I am planning to wire a MAP to my nGauge and datalog it there.

    Thanks for the suggestion MRRPMBRP

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    Advanced Tuner bbrooks98's Avatar
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    I wired mine into the AC pressure sensor with a temporary adapter and logged AC pressure. Seems to work

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    Senior Tuner CCS86's Avatar
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    Quote Originally Posted by bbrooks98 View Post
    I wired mine into the AC pressure sensor with a temporary adapt er and logged AC pressure. Seems to work


    Nice!

    So with the nGauge, it shows a PID for MAP voltage with no reading. I guess it could just be for another late model Ford / non-Copperhead. It would be cool to find an unused circuit in the existing harness.

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    Senior Tuner veeefour's Avatar
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    Quote Originally Posted by bbrooks98 View Post
    I wired mine into the AC pressure sensor with a temporary adapter and logged AC pressure. Seems to work
    Neat idea!

    Quote Originally Posted by CCS86 View Post
    Nice!

    So with the nGauge, it shows a PID for MAP voltage with no reading. I guess it could just be for another late model Ford / non-Copperhead. It would be cool to find an unused circuit in the existing harness.
    Interesting - PCM has an MAP input for sure as the software suggest - you can switch the MAP on in your tune and make and log it. But which one is it?

    If you take a look at EB you can see that pin 33 is used for MAP signal voltage. And the same pin is used for AC pressure sensor in Coyote:

    eb map.jpg


    coyote ac.jpg
    Last edited by veeefour; 05-07-2018 at 07:36 AM.

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    Advanced Tuner bbrooks98's Avatar
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    That's something i had hoped to explore and assumed existed but could never find a pinout for a map equipped car. I wonder what the EB uses for AC?

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    Senior Tuner veeefour's Avatar
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    Pin 52 in another connector which is Knock sensor in Coyote - I can't guarantee they are the same but this might be the way.

    eb ac.jpg

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    Senior Tuner veeefour's Avatar
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    Another way might be to use Oil Pressure sensor input . Non PP cars have 2 state oil pressure switch only and PP cars have actual oil pressure switch/transducer. I'm going to explore this way.
    Last edited by veeefour; 05-08-2018 at 01:02 AM.

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    The 2013 GT500 Copperhead has a MAP sensor, so you should be able to run a MAP on a Copperhead Coyote IMO
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    Quote Originally Posted by STAGEUP View Post
    The 2013 GT500 Copperhead has a MAP sensor, so you should be able to run a MAP on a Copperhead Coyote IMO
    2014 GT500 doesn't have a MAP sensor, neither does a 2010, can't imagine a 2013 having one.

  17. #17
    Quote Originally Posted by veeefour View Post
    Interesting - PCM has an MAP input for sure as the software suggest - you can switch the MAP on in your tune and make and log it. But which one is it?
    I saw that switch, has someone actually enabled it?

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    Senior Tuner veeefour's Avatar
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    Nobody knows to which pin it corresponds to.

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    Quote Originally Posted by MRRPMBRP View Post
    2014 GT500 doesn't have a MAP sensor, neither does a 2010, can't imagine a 2013 having one.
    That's correct.
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    Senior Tuner CCS86's Avatar
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    I wish I could edit the title of this thread, since it was based on bad info... but the intention is still there.

    The fact that many strategies have the [ECM] 44204 - MAP Sensor: Master enable/disable for MAP Sensor. switch; combined with the nGauge also listing a MAP Sensor Voltage as a loggable channel with a steady 0v signal, makes me think that there is a pin reserved for this.

    Does anyone have a PCM pinout / wiring diagram for the Copperhead?

    I have a MAP sensor wired in now and can log it with my nGauge, but sampling rate and limited channels make it less than ideal. I don't currently have the MPVI Pro interface, and honestly it's a pretty big expense, and more of a wiring hassle than one extra signal is worth.