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Thread: Running multiple ECU's for different 'Modes'

  1. #1

    Running multiple ECU's for different 'Modes'

    this is probably some crazy idea which will never work but as im a vehicle body repairer and not an auto electician, i wouldn't know..

    My idea, i know how cars have ECU's which control the fuel, ignition timing, idle speed etc..

    Now on some performance cars, there is normally a Sport or Race button, which makes the car respond quicker, ferrari f430 has it on the steering wheel..



    Would it not be possible to fit 2 ECU's, the standard one, and a re-mapped one, but wire the re-mapped ECU to only be working when a switch it flicked sending the power from the standard ECU to the remapped one to create that 'sport' button?

  2. #2
    I am running a Haltech ECU and it is capable of two modes. Track and Street, or whatever you want to call it. It can be controlled by a switch similar to the above. I can change rev limits, idle speeds, injection width, timing degrees and many more variables.

  3. #3
    ah, i never knew theyre were ECU's which had multiple settings.. Would my idea of having 2 ECU's also worked?

  4. #4
    Senior Member
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    Technically speaking, I think you could wire multiple ECU's if you wanted, but that's a massive wiring mess.

  5. #5
    Quote Originally Posted by Dante View Post
    ah, i never knew theyre were ECU's which had multiple settings.. Would my idea of having 2 ECU's also worked?
    Sure thing! If like spending twice the money that is.

  6. #6
    Senior Member dwheeler's Avatar
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    It's much easier to get a chip for one ECU that has multiple settings. They even come with the switch. Mine has 5 settings: original, 4 custom, and one kill position.

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