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Thread: is a ZF9 trans axle tunable?

  1. #1

    is a ZF9 trans axle tunable?

    I have a promaster city , the small truck with 9 speed slush box, it needs adjustments , can i do this with the MPVi???

  2. #2
    Tuner
    Join Date
    Aug 2018
    Location
    SK, Canada
    Posts
    54
    Yes it requires 4 credits and if its 2018 or newer requires a security module bypass, the trans tuning on the 9 speed isn't as straight forward as other transmissions but it is doable

  3. #3
    how many have you tuned? I have the older MVPI unit, i'll try and pull data this weekend on it..

    i want to remove the lock up converter 1-4th gear, and remove as much slip from the clutches as possible.

  4. #4
    Tuner
    Join Date
    Aug 2018
    Location
    SK, Canada
    Posts
    54
    Older MPVI2 doesn't support the ZF9 you'll need the MPVI2

  5. #5
    Tuner
    Join Date
    Aug 2018
    Location
    SK, Canada
    Posts
    54
    If you have a read of the TCM send it over to me via PM and I'll take a peak at it