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Thread: has anyone played with shift timing?

  1. #11
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    Ok thanks for the help. I just though you might be able to disable it earlier in the rpm range or disable it all together to get more pressure?

    Sorry for all th questions but is there any benifit to adjust any of the other TCC tables or trans tables besides shift points?

  2. #12
    Lifetime Member Cougar281's Avatar
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    There may be if you know what you're doing (which I don't); If you tinker with shift timing tables and such, you run the risk of seriously screwing something up (potentially "pick the pieces of your transmission up off the ground" type screwed up).

  3. #13
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    I asked the shift timing ?? on duramaxtuner, here is Nick's reply;

    "It's a touchy area, you'll find a lot of mixed review on it.
    My personal truck has the shift times shorted between 150 and 200 ms from stock. I would work in 25-50ms incriments and be careful!
    Hope this helps,
    Nick"

  4. #14
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    With respect to the TCC Solenoid >? I think another reason that it is pulsed is for the cooling effect.
    It allows a small amount of fluid to flow through the clutch during the off segment
    Last edited by sledbert; September 22nd, 2008 at 03:12 PM.

  5. #15
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    Ok thanks but does anyone else have trouble with their tcc lockup at WOT?

    I wish there was a way to log it but it dosent feel like my converter locks untill about 50-60mhp?

  6. #16
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    I think u'r correct, that there is no PID's or logging for the trans.
    However....you can tune the TCC lock-up speed to where you'd prefer it.

    Upload the stock trans tune & check the TCC lock-up speed D5014, change it & see what it does & how you like it.
    My stock tune in 6th gear wants lock-up at;
    50% TPS=74kph , 75%+=85khp (55mph)
    does this help??

  7. #17
    Senior Member Racehemi's Avatar
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    Here are the Allison PID's I have logged
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    04 2500, LLY/A, 4x4, CC, SB, 285 Toyo's, Amsoil lubes, Access Roll-up Tonneau, ATS Stage 2 trans, ATS 5 Star Converter, Bilstein's, Caltracs bars, Cognito Braces, EFILive, Kennedy Diesel Custom Tuning, Kennedy Diesel headlight harness, Kennedy Dual Lift Pump/Filter combo, Prodigy brake controller, Spa DG 211, Trippin Cyclops overhead gauge mount, , TTS 4" Exhaust, TTS Xtreme Beta, Amsoil Ea filters, Banks CAI

  8. #18
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    I have a 2008 with the 6spd Ally, I see the PID's that you have logged when "all" is selected. but when I Tag only the "supported" PID's the list goes to zero. This tells me that the new 6spd TCM isn't monitored. I could be wrong.....

  9. #19
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    I did not even know you could log PID's from the allison. My labtop broke so I can't check it now but next time ill see when I connect to the tcm see if i can try to validate the PID's. I havent messed with my part throttle lockup I just set the WOT values in each gear to what they were in each gear in T/H.

    For thoes with a stock converter and trans what slip are you seeing with higher power tunes?

  10. #20
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    Quote Originally Posted by sledbert View Post
    I have a 2008 with the 6spd Ally, I see the PID's that you have logged when "all" is selected. but when I Tag only the "supported" PID's the list goes to zero. This tells me that the new 6spd TCM isn't monitored. I could be wrong.....
    You can only log one controller at a time. Do you have the allison lbz/lmm controller selected?

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