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    Kennedy Custom || Duramax LB7 - Kennedy Custom


    Click on the Item Name for more detailed information.



    Item Information Purchase Options
    KD Custom ECM programming for Duramax LB7    

    Dual mode switchable tuning allows you to have your choice of two tunes available at all times! Typical tune sets are 50HP econ/tow and 100HP perf tow. Includes DSP2 switch. Race tunes (250+HP) also available see listing below.

    LB7 Installation Instructions and Product Review

    "This item requires an exchange ECM or we can provide one for an additional charge. Please see listings below." - JK

    Performance Tune Dyno Plot

    When comparing dyno numbers, please note that my dyno plots do NOT use correction factors. These are no BS dyno runs with no inflation to make sales. -JK


    $695.00
    KD Custom ECM programming for Duramax LB7-Race level    

    Dual mode switchable tuning allows you to have your choice of two tunes available at all times! Tunes available to produce anywhere from 40HP economy to 250+HP Race. Includes DSP2 switch.

    "This item requires an exchange ECM or we can provide one for an additional charge. See listings below." - JK

    Race Tune Dyno Plot

    When comparing dyno numbers, please note that my dyno plots do NOT use correction factors. These are no BS dyno runs with no inflation to make sales. -JK


    $895.00
    ECM core for Kennedy Custom Dmax LB7-Deposit only    

    If you do plan to return your ECM core but need us to supply you with a loaner, please select this item. We can also program the ECM to any factory calibration if necessary. This item available for purchase ONLY with Kennedy Custom Tuning and is not available for individual outright sale. Core must be returned within 30 days or it will be billed as non refundable. Please note: If core deposit only is selected any future updates will require that the ECM be sent to us for the update.


    $400.00
    ECM core for Kennedy Custom Dmax LB7-Purchase    

    If you do not plan to return your ECM core please select this item. We can also program any ECM to your factory calibration if necessary. This item available for purchase ONLY with Kennedy Custom Tuning and is not available for individual outright sale.


    $400.00
    KD Basic ECM programming for Duramax LB7    

    Basic tune changes include passlock reset for engine swaps, speedo recalibration, factory updates, and fixing of any Diagnostic Trouble Code issues that were covered by GM factory updates. Also includes ECM recovery from failed tuning attempts and reset to a good clean factory tune.

    "This is not a complete tune, only a basic fix and requires the ECM to be sent in to us or a suitable core must be provided. We will not provide a core for this item. It also does not fix 2001 limp mode issues. See Kennedy Custom tuning for this." -JK


    $200.00
    TCM replacement for Allison 5 speed-LB7    

    This is a good used replacement TCM loaded with the proper file to match the VIN and stock calibration of your LB7 equipped truck.


    $350.00
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