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change ecm parameters

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  • change ecm parameters

    Is there any way to change things like the speedometer calabration, shift points, engine cut off speed limiter, etc. on a J1850 VPW based OBD2 ecm for a 2000 dodge grand caravan? I don't mind laying out some cash for a good product. This is for the 1000-horsepower van project. this thing is really close to some test runs. The transfer case is almost done and then I plan to try it out.

    Chris Krug
    owner, turbine minivan

  • #2
    I don't believe so.
    I beleive your van requires a DRB III scan tool in order to change/program such things (my 2000 intrepid does). This is a dealer only item (chrysler proprietary). You can purchase one, but last time I checked they ran around6,000! :wow: And that doesn't include the programming updates, you have to be an authorized dealer to get those (or you have to have a buddy set you up under the table)
    Also, you can really mess up the vehicle if you're not sure what you're looking at.

    Here's a couple links:
    (Here's one for $2,000)

    Good luck

    For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
    Leonardo Da Vinci