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Thread: A50 TCM not shifting per Tuning.

  1. #1
    Junior Member
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    Default A50 TCM not shifting per Tuning.

    I feel like a total rookie at the moment but I guess I am with the A50. Finally have had time to play around with mine and I seem to have an issue with the trans shifting earlier then the tuning adjustments I have. Some how I have it in 5th gear while under 40MPH yet per my tuning I have it in 4th until about 50 under 35% TP.

    Is there far more speed based tables that are deep in the HEX that are controlling the shift regardless of my tuning?

    Thanks in advance.
    Last edited by jgooch1548; March 26th, 2017 at 04:50 PM.
    2003 LB7 ECSB
    - Not Built, Intake, Mbrp Black Series 5" Straight, Banks Big Head Wastegate
    - Bagged in rear with Air Lift, 305/65/17
    - EFI Live By Myself, Used For Work
    - Sold at 242k

    2011 LML CCSB
    - Stock... For Now

  2. #2
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    Apr 2017
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    Default

    I see some of the same things on the T87 controller. Did you figure it out ?

  3. #3
    Junior Member
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    Oct 2014
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    No still messing with me. I flashed with new tune the full flashed and now 1, 2, 3, and sometimes 4th follow my demands but still goes into 5th far too early. I even bumped up the speed to shift into 5th at 60 and it's ignores that completely.

    Sent from my SM-G920V using Tapatalk
    2003 LB7 ECSB
    - Not Built, Intake, Mbrp Black Series 5" Straight, Banks Big Head Wastegate
    - Bagged in rear with Air Lift, 305/65/17
    - EFI Live By Myself, Used For Work
    - Sold at 242k

    2011 LML CCSB
    - Stock... For Now

  4. #4
    Lifetime Member bobo's Avatar
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    There is a backdoor bogus way to get it to react...I tried to get some attention when this was in beta and got kicked in the nuts by all your tuner buddies who like back door tricks to keep honest people from figuring this stuff out. Good luck.
    2005 Twin Turbo Dmax/Allison Ext. Cab Short Box 4X4
    Best 1/4 11.8 @ 118+ on #2 only

    Twisted Diesel Tuning-The leader in Duramax Tuning Services and soon to offer Common Rail Cummins Tuning!

    Bobotune at rocketmail dot com

  5. #5
    Junior Member
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    Quote Originally Posted by bobo View Post
    There is a backdoor bogus way to get it to react...I tried to get some attention when this was in beta and got kicked in the nuts by all your tuner buddies who like back door tricks to keep honest people from figuring this stuff out. Good luck.
    I was actually referred to you Bobo but could not locate you on here for some reason. But there is actually some way to get them to react just like the A40 would? It's got me completely stumped to say the least.

    Sent from my SM-G920V using Tapatalk
    2003 LB7 ECSB
    - Not Built, Intake, Mbrp Black Series 5" Straight, Banks Big Head Wastegate
    - Bagged in rear with Air Lift, 305/65/17
    - EFI Live By Myself, Used For Work
    - Sold at 242k

    2011 LML CCSB
    - Stock... For Now

  6. #6
    Member
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    May 2017
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    66

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    Wonder when we get all the maps to make it shift when we want ???

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