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Thread: 4.3 CPI tuning valve and secondary injectors

  1. #1
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    Default 4.3 CPI tuning valve and secondary injectors

    I have a 4.3 CPI that I am re pinning to a 0411 from a 01 blazer. Its being converted to a manual, I found a base tune file to work off of.

    1st Im wondering if anyone has any experience adding input and outputs to the 0411. At 3k RPM I want this tuning valve to open. Its either open or shut and uses 12 volts to operate.

    2nd in all the tunes I am finding that use a manual, why does the transmission calibration have parameters of any kind? When looking into a manual tune file you still see TCC and downshift, upshift parameters.
    Last edited by Alan.hulse1984; May 22nd, 2020 at 05:53 PM.

  2. #2
    Joe (Moderator) joecar's Avatar
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    To add an output, the PCM circuit board must have a driver (power transistor/fet) to sink the current... so you would have to see if you have any unused driver and if you can address it.


    See the response to you other thread regarding MT vs AT.

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