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Thread: Turbo Crown Vic transmission tuning

  1. #1
    Tuner in Training
    Join Date
    Oct 2021
    Posts
    22

    Turbo Crown Vic transmission tuning

    Hi there, just trying to get a crisper 1-2, 2-3, and more torque holding capability out of my turbo Crown Vic and looking for some tips on how to achieve this. Trans is healthy, haven't noticed any slip, and I have boost and timing super conservative right now. I've tried playing with clutch fill times and TV pressures but wasn't able to get a noticeable improvement so set them back to stock for now. Can anyone guide me on where to make changes?

    Here's the current tune and a 1-2 shift log.
    P71_trans1.hpt
    trans1-2.hpl

  2. #2
    Tuner in Training
    Join Date
    Oct 2021
    Posts
    22
    Was able to get considerable improvement just leaving fill times the hell alone, and adjusting TV slope and intercept, and also zeroing out the TV Shift "adder" tables (negative numbers in the table stock, actually reducing TV pressure).

    Pretty happy with it now, but would still like some insight from a pro who's played with these settings.

    New log and tune
    trans1-2(2).hpl
    P71_trans2.hpt