Results 1 to 2 of 2

Thread: A6 Cal Shift Points Not Matching Actuals

  1. #1
    Lifetime Member
    Join Date
    Dec 2007
    Posts
    1,143

    Default A6 Cal Shift Points Not Matching Actuals

    Anyone had any experience with calibrated shift points, not matching the actual logged shift points, on A6's or even A4's?

    This is with the speedo setup being correct on the ECM and TCM, with speedo indicating within 0.5%.

    Actual shift points, both up and down, and TCC engage points, are around 20% lower than the calibration.

    Yes it can be fixed by increasing calibrated shift points, but though there is maybe something else I am missing!

    cheers.

  2. #2
    Lifetime Member
    Join Date
    Dec 2007
    Posts
    1,143

    Default

    Quote Originally Posted by gmh308 View Post
    Anyone had any experience with calibrated shift points, not matching the actual logged shift points, on A6's or even A4's?

    This is with the speedo setup being correct on the ECM and TCM, with speedo indicating within 0.5%.

    Actual shift points, both up and down, and TCC engage points, are around 20% lower than the calibration.

    Yes it can be fixed by increasing calibrated shift points, but though there is maybe something else I am missing!

    cheers.
    At a guess, it would make logical sense, and be consistent given the variable loads these transmissions need to encounter, that there would be a torque based modifier to the alter shift patterns based on currently delivered engine torque. The mismatch I am experiencing is mainly light throttle (7-12% at the pedal), so maybe the strategy is to get to the highest gear as soon as possible under very light load.

    Anyone have any feedback on this? My Helms has not arrived yet. If that even covers that deeeeep.

Similar Threads

  1. Little help with changing shift points
    By Tarkstoys in forum Allison 5 & 6 Speed
    Replies: 6
    Last Post: June 29th, 2009, 06:54 AM
  2. tuning shift points
    By hot-dog in forum Allison 5 & 6 Speed
    Replies: 3
    Last Post: February 28th, 2009, 08:03 PM
  3. shift points
    By rock04max in forum General
    Replies: 2
    Last Post: December 1st, 2008, 01:09 PM
  4. Help with 80E shift points
    By thunder550 in forum 4speed RWD/FWD Transmission Tuning (incl T42)
    Replies: 9
    Last Post: May 20th, 2008, 03:08 PM
  5. TCM shift points
    By lakingslayer in forum General (Diesel)
    Replies: 4
    Last Post: March 28th, 2007, 11:09 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •