Need 03-04 Cobra IAT/BAP sensor calibration curves

+ Reply to Thread
Results 1 to 12 of 12
  1. #1

    Default Need 03-04 Cobra IAT2/BAP sensor calibration curves

    Been searching for days on the net and can't find them anywhere. Swapping over a Holley Terminator X ECU and need to wire in the IAT2/BAP sensor. Any help would be appreciated. Thanks
    Last edited by arrowhead; 08-26-2020 at 01:46 PM.

  2. Remove Advertisements
    ModularFords.com
    Advertisements
     

  3. #2

    Default

    iat2 shares iat1 and ect transfer, bap gives hz signal, I haven't found anything for it. In my mach1 ecm it's unusable.

    AZM1 Cobra
    5.00 -169.00
    5.00 -169.00
    4.60 -46.00
    4.57 -40.00
    4.37 -9.00
    4.08 19.00
    3.60 46.00
    1.42 133.00
    0.72 179.00
    0.39 222.00
    0.24 254.00
    0.15 293.00
    0.13 302.00
    0.05 340.00
    0.00 340.00

    Mach1
    5.00 -46.00
    4.57 -46.00
    4.34 -4.00
    3.88 32.00
    1.52 131.00
    0.91 167.00
    0.53 203.00
    0.36 230.00
    0.21 270.00
    0.05 340.00
    0.00 340.00
    0.00 340.00
    0.00 340.00
    0.00 340.00
    0.00 340.00
    Last edited by FinnCobra; 08-28-2020 at 01:55 PM.

  4. #3

    Default

    Quote Originally Posted by FinnCobra View Post
    iat2 shares iat1 and ect transfer, bap gives hz signal, I haven't found anything for it. In my mach1 ecm it's unusable.



    Have no idea what you are saying but I think I got the gist of it

  5. Remove Advertisements
    ModularFords.com
    Advertisements
     

  6. #4

    Default

    engine temp, intake temp, transmission temp all uses same calibration curve, attached previously voltage vs fahrenheit
    Bap gives frequency based square waveform
    Last edited by FinnCobra; 08-28-2020 at 01:51 PM.

  7. #5

    Default

    ok got it thanks, but I'm sol as far as using the stock Cobra combination iat/map sensor for pressure as it's not based on voltage but hz correct? - yes you just edited I see thanks

    so I should be able to use the stock sensor for temp but add a 2 bar and just grab the signal from a vacuum line.
    Last edited by arrowhead; 08-28-2020 at 01:53 PM.

  8. #6

    Default

    I checked and added correct transfer, Mach1 had different

  9. #7

    Default

    ok cool, thanks

  10. #8

    Default

    I use IAT2 wired instead of IAT1 with mach ecm, works as intended. Differences in curve are minimal.

  11. #9

    Default

    Holley uses a all new plug and play harness so there's only one iat

  12. #10

    Default

    If you are supercharged you need an IAT2 signal to determine when and how much timing to pull to prevent detonation. IAT1 only tells you the ambient air temp.


    Ed

  13. #11

    Default

    Quote Originally Posted by eschaider View Post
    If you are supercharged you need an IAT2 signal to determine when and how much timing to pull to prevent detonation. IAT1 only tells you the ambient air temp.


    Ed
    That's why I'm trying to use the sensor below the blower.

  14. #12

    Default

    That's good, however your EFI system will need to have the over temp logic and corresponding ignition retard logic built into the engine management software or the sensor will have no effect whatsoever.

    Ed

  15. Remove Advertisements
    ModularFords.com
    Advertisements
     

+ Reply to Thread