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EFI advice on a Supercharged 408 with an EEC IV

Discussion in 'EFI Tuning Questions and Engine Management' started by 1974Cuda360, Oct 13, 2008.

  1. 1974Cuda360

    Joined:
    Jun 17, 2005
    I am looking for tuning advice from any one that has a tweeked their EEC IV to run properly with a larger cubic inch motor like a 351 or a 408. Did anyone experience drivibility problems such as too much timing advance at part throttle when using an EEC IV on a larger cubic inch motor? And, how did you resolve these problems? I know that there are tuning options like the Tweecer and the PMS. I am interested in finding out what you have used to enhance drivability.
     
    1974Cuda360, Oct 13, 2008
    #1

  2. Drlee50

    Joined:
    Feb 28, 2003
    PICS OF YOUR CAR OR BAN!!!!!!! LOL
     
    Drlee50, Oct 13, 2008
    #2

  3. 1974Cuda360

    Joined:
    Jun 17, 2005
    Ok, here are some pics of the engine and the car.

    Image-008.JPG #ad


    Image-011.JPG #ad


    Image-021.JPG #ad


    DSC_0304.JPG #ad
     
    1974Cuda360, Oct 13, 2008
    #3

  4. underpsi68

    Joined:
    Jul 9, 2005
    I used the PMS with a 352 and a Vortech. Drivibility was excellent. Ran like a stocker. The PMS works great with the centrificals.
     
    underpsi68, Oct 13, 2008
    #4

  5. 1974Cuda360

    Joined:
    Jun 17, 2005
    Did you have to do a lot of tuning to get the engine to run like a stocker? Was the stock computer close or did it need a lot of tuning?
     
    1974Cuda360, Oct 13, 2008
    #5

  6. underpsi68

    Joined:
    Jul 9, 2005
    This will depend on your combo and how good of a cal your MAF has.

    I was able to tune it pretty easy. Basically get the A/F right and adjust the timing till it runs smooth. I am also running an auto transmission so it would be harder for me to get bucking. I would recommend a good custom cam if you are worried about streetibility.
     
    underpsi68, Oct 13, 2008
    #6
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