Trans tuning

NRA223

New member
May 20, 2015
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I really liked it on my truck. I'm geared towards performance though. It did make the trans behave better in dd situations too but I don't know if it's worth the money for that alone.
 

Digmax

Member
Jan 23, 2016
289
2
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Get it, maxx effort, flog it. Don't look back

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bmc1025

Member
Jan 25, 2013
521
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Big Bone, KY
I like my downshifts at lower throttle input, that alone is worth it to me but i tune myself. If you are looking into Kory's tune id say it is worthwhile, it also raises line pressure with torque.
 

DmaxDrew

New member
Dec 24, 2014
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Texas
With the sketchy tcm's in the 2011 LML's. Will it cause them to go out any quicker with a TCM tune? My TCM is still stock and I've had no problems with it yet.
 

Digmax

Member
Jan 23, 2016
289
2
18
My tcm had a existing problem I never knew about till tried loading korys tunes, they would load fine but when would limp soon as tranny temp was over 120 and couldn't flash back to stock. bought a new one and no probs so could possibly have some issues but they said mine was second one out of 150 back in February so would be pretty safe but may wanna check make sure tcms are not back ordered where then. Mine is a 14 model.

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S Phinney

Active member
Aug 15, 2008
4,008
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Quncy, Fl
With the LML if you start turning it up any to speak if tranny tuning is very important. It will be the difference in liking your truck and the tuning on it or not liking several things about your truck. It is worth doing for certain.

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Goss

New member
Apr 4, 2016
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Mulberry Grove, Il
I did a trans tune, I haul a horse trailer and it makes a difference when hauling, I don't usually hot rod, but on the more fun tunes, trans does seem to be more agreeable.
 

Duramaxduner

New member
Oct 28, 2013
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I got trans tuning and 3 months later the TCM went out and all the wiring needed to be replaced. Maybe it was just a coincidence, maybe not. but it didn't seem to make a big difference for me.
 

pizza pig

I Like to Party
Feb 13, 2012
266
0
16
CT
I got trans tuning and 3 months later the TCM went out and all the wiring needed to be replaced. Maybe it was just a coincidence, maybe not. but it didn't seem to make a big difference for me.

Sounds like hardware failure not software.
 

2004LB7

Super Moderator
Staff member
Dec 15, 2010
7,143
2,234
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Norcal
i wouldn't get trans tuning just to get trans tuning. now if there was a particular issue you are trying to address, then yes it may be worth it. shift points, many times are adjusted and depending on your situation can help DDing (or WOT) a lot.

my allison shift points are vastly different than stock. wouldn't be happy any other way :)
 

S Phinney

Active member
Aug 15, 2008
4,008
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Quncy, Fl
Then use the tow haul and or manual shifting and save your money if that's the only reason you wanted it.


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DAVe3283

Heavy & Slow
Sep 3, 2009
3,733
305
83
Boise, ID, USA
It is my understanding that the 2011+ Allison controls the line pressure through the TCM, unlike all previous Allisons. Given that, a trans tune would be highly recommended any time you get an ECU tune to increase line pressure to match the increased torque, which will help keep the trans in one piece. Getting to adjust your shift points is just a bonus.

On the older trucks, I wouldn't do a trans tune unless you wanted/needed different shift points.