2015 trans mods

Mike L.

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Line pressure is adjusteable via tuning, BUT we don't have access to it. As of right now you either can get a pressure box or ppei tcm tuning to change line pressure electronically. And theres no transgo jr because the 11+ basically already have it in them.
No it does not. totally different strategy in the LML. Pressure spikes on upshift and downshift along with TCC. I love this strategy. Much better than constant pressure.
 

pavetim

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Jan 10, 2011
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I have a 2011 lml and I'm confused somebody said line pressure is adjusted thru tuning but then says we do t have access to it. I have a stock tcm tune and don't see any line pressure tables. So how do the tuners change line pressure if we don't have access to the tables?
 
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clrussell

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You can pull the pan and unplug the factory pressure control solenoid and add a dummy solenoid part number 29541895 to keep from coding and get pressure constant. If you ever build the Trans properly remove the dummy solenoid and plug the factory one back in.

Well that's handy to know
 

THEFERMANATOR

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No it does not. totally different strategy in the LML. Pressure spikes on upshift and downshift along with TCC. I love this strategy. Much better than constant pressure.

I know it spikes on the shifts and tcc(never said it dodn't). What I was saying is if one had access to the pressure tables in the tuning, one could adjust pressure that way and change line pressure electronically via the tuning(like Kory does in his tcm tu,8ng for them). But we don't have access to this via regular efilive tables despite numerous requests. So I listed the 2 ways I knew of to increase line pressure if one wanted to without pulling the trans, and I see a 3rd way was listed as well. If one wanted to, they could find the tables themselves, and write a cax like those who do have access to those tables have done.
 

THEFERMANATOR

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I have a 2011 lml and I'm confused somebody said line pressure is adjusted thru tuning but then says we do t have access to it. I have a stock tcm tune and don't see any line pressure tables. So how do the tuners change line pressure if we don't have access to the tables?

Correct. The tables to change the pressure strategy are in the tune, but we only have access to but maybe 1% of what is actually in the tune file via efilive. You're free to write your own cax files if you want to add in other parameters which is what ppei has done, and how he offers pressure changes via tuning. So the tables are there, its just the majority of us don't have access to them.
 

IOWA LLY

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I know it spikes on the shifts and tcc(never said it dodn't). What I was saying is if one had access to the pressure tables in the tuning, one could adjust pressure that way and change line pressure electronically via the tuning(like Kory does in his tcm tu,8ng for them). But we don't have access to this via regular efilive tables despite numerous requests. So I listed the 2 ways I knew of to increase line pressure if one wanted to without pulling the trans, and I see a 3rd way was listed as well. If one wanted to, they could find the tables themselves, and write a cax like those who do have access to those tables have done.
I think Mike was referring to what you said about the LML transmissions essentially having a transgo-jr already built into them. Which is not at all how it works. Transgo trim valves, and there operation are completely different then the LML setup.....

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pavetim

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So the lml would benefit from a trans go jr? Ok so the lml pressure spikes when shifting and settle after the shift, is that how it's setup? That's ideal really cause you don't want full pressure when cruising cause it will create parasitic drag. I will only be running a 110hp tune you really think I need to mess with line pressures? I can tune shift pints and lockup and stuff like that myself.
 

pavetim

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In a side note I looked at ppei site and his lml tuning goes to 200hp and claims he engineered them for stock trans safe. Anybody know how his tunes are compared to like ridgerunner?
 

600+duramax

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Jan 18, 2007
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Does increasing the tq value in the tq table under tq management increase line pressure? I thought it did?
 

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I think Mike was referring to what you said about the LML transmissions essentially having a transgo-jr already built into them. Which is not at all how it works. Transgo trim valves, and there operation are completely different then the LML setup.....

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I was going off of one of his posts from years back where he said the 11+ basically had the jr built in now from where somebody tried putting one in theres.
 

600+duramax

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I think increasing the values in the 1 tq table we have is turning tq management down? I'm no tuner but that's the way I interpreted it.
 

Mike L.

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I was going off of one of his posts from years back where he said the 11+ basically had the jr built in now from where somebody tried putting one in theres.

I probably posted that before I got my LML and actually tested it. It has nothing like the Transgo. Main mod solenoid controls pressure.
 

pavetim

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So back to my question. Do they make a transgo and will it benefit a lml lol an lmm. And anybody familiar with ppei tuning and how it is?
 

S Phinney

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The best benefit short of building the tranny will be changing the converter and if you wanted at that point there are a couple mods you could do that will have a positive effect on line pressure. If I wanted a better tranny but didn't want to build it right now good tuning and don't turn it up too much. The torque converter is one of the major flaws in stock format.


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Mike L.

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So back to my question. Do they make a transgo and will it benefit a lml lol an lmm. And anybody familiar with ppei tuning and how it is?

There is no Transgo for the LML and never will be. If you want more pressure for the LML; a simple solenoid install will do the same thing as Kory's 400.00 TCM tune. It is still a band aid.
 

IOWA LLY

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Exactly. A band aid. Not to mention the stock LML torque converter is not designed for high line pressure. So those of you thinking that the tcm tune is helping you, keep in mind your short lifing the converter.......

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pavetim

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I thought the converter in the lml was a triple disc and better than the lmm? That's one reason I went with lml and not lmm again cause thought the lml HS a better converter?