99 V6 Auto to 5 speed swap.

Discussion in '94-04 - V6 Specific' started by Magic, Nov 22, 2014.

  1. Magic

    Magic Well-Known Member

    Likes Received:
    May 3, 2007
    Some time zone
    A buddy of mine is looking to swap the auto to a 5 speed in his wifes 99 V6 Mustang.

    He's got almost all the parts but is missing a few things like the pedals and transmisson harness.

    The main question I have is regarding the ECU.

    If a 5 speed ecu is swapped in, will that affect the PATS?
    Or can the auto ecu be used still along with an SCT tune (to compensate for the 5 speed)?