OK new EFI Live update is out for the public.
http://forum.efilive.com/showthread.php?t=6641

To remove the LBZ RPM limiter for OS 12606128, go to B1014.

Change the 3400,3600,4000 RPM table to 125. Save.

That's it, have fun!

Thanks rob I was wondering if that was all there was to it. I just figured that was too simple.


Thanks again.
Randy

Rob, I was looking at all the new tables that were added. I noticed table B1128, Barometric Pressure Torque Limiting table. It looks like it kills the requested torque input as RPMs climb. On a stock LBZ tune they appear to taper off to 443 (on my 06 LLY it tapers off to 0 eventually). Have you modified that table any? It looks like that table may have been part of the reason why my truck wouldn't achieve the same torque reference number as an actual LBZ.

YAY!!! Good job efi crew

wow!!! just tried it out its like a new truck and the sound of that extra rpm is bada$$

Figures, I dont have that OS

The tables are on every OS I have looked at so far.

I really wont know till I get home and download the update. Of course it comes out on the one night a week I have to work late

hmmm this single change did not work for me. perhaps I have other things that need to be raised in my tune to make this work. would I have to adjust tcm WOT rpm and speed tables to make this work? I have not done any TCM tuning

Did you shift it manually?

no. I let it go on its own

Rob, I was looking at all the new tables that were added. I noticed table B1128, Barometric Pressure Torque Limiting table. It looks like it kills the requested torque input as RPMs climb. On a stock LBZ tune they appear to taper off to 443 (on my 06 LLY it tapers off to 0 eventually). Have you modified that table any? It looks like that table may have been part of the reason why my truck wouldn't achieve the same torque reference number as an actual LBZ.

I am also very intersted in this as well. I seem to still have some rpm limiting issues......

no. I let it go on its own

Shift it manually. You will have to make a trans tune that raises the shifts point to do it normally. Just rev it in neutral and see if the rpms are raised. I can hit well over 4k quite easily driving in manual.

Ummm... I've modded so many things to find the fix, that when Ross said "try this" and it worked, I figured that was the table. Guess it may be a combo of things. Can't be but a couple of tables, I'll check.

The RPM fix should happen without a tcm modded tune or shifting in manual. Although the best way to test is to log and run in one gear to see if the limiter is gone.

well my next attempt for tomorrow will be to raise B1128 from 3300 to 4000 to the 800 range and see if that does something. right now 3250 is at 810 Nm and dropps off to a low of 600 Nm at 4000. tomorrow is another day.

Just changing that one table b1014 worked perfect for me I can hit 5000Rpms if I hold it in gear, the only way I can get it do that is shifting manually.

Just tried it on my tow tune and my daily driver and it didnt work...Only worked on my high hp tune, must be a combo of tables Ill try some things tomorrow.

do you mean manually it worked or in drive on your HP tune? I know manually before It wouldnt rev over 3200 I havent tried tonight. tomorrow on my way to work i'll see what happens

Manually it worked, when i left it in drive it shifted at the normal points. When I tried it on my other tunes it didn't work at all would defual at 3500rpm.

Here's a list of all the tables I see that could affect the RPM limit. I haven't tried any of the new ones so I have no idea what does or does not need to be adjusted. Most of these were available before, but the new ones are in bold:

B1130 TCM RPM Limiting
B1115 Pedal Position to Desired Torque
B1102 Torque Based Fuel
B1117 Maximum Fuel Quantity vs. RPM
B1118 Maximum Torque1 vs. RPM
B1119 Maximum Torque2 vs. RPM
B1128 Barometric Pressure Torque Limiting
B1122 Torque Fuel Limit RPM Conversion
B1014 Pressure Maintain Fuel Limit

well. I changed the old ones so they maintained higher limits in the existing tables. and disabled B1130 and raised B1014 so the only one left is B1128 I made my adjustments but have to wait till tomorrow to test it. hopefully i'll have good results. if not. i'll be diving into the TCM for the first time to adjust the WOT tables

why cant i find any of the new tables-im missing something here

Did you download the new update that came out yesterday?

yeh im all up to date everything works{scan/log} v751 or something and build 24 firmware updated bla bla-but no tables wtf?

anyone tried this in 4wd low lock?

yeh im all up to date everything works{scan/log} v751 or something and build 24 firmware updated bla bla-but no tables wtf?

Did you also download the files besides the update to 7.5?

The ones that need to unzipped in the calibrations file

ok I still havent made it out to try this but I was playing around with a tow tune and changed the following tables

B1115 & B1116 both 3300 - 4000 rpm and 60-100 tps just extended the tables
B1117 4000-4800 all
B1118 3400-5200 all
B1119 3400-4000 all
B1128 3500-4000 all
B1122 3200-3500 .88-1.0
B1124, B1125, B1126, B1130 Disable


I noticed B1130 TCM rpm limiting. That sounds like it will still let the tranny have some defuel. I would think maybe all this stuff will surely disable the engine defuel but you probably have to disable B1130 to have no defuel.

Then on the other hand wouldnt you have to load a tcm file to do anything with the tcm like disable tcm defuel?

I noticed B1130 TCM rpm limiting. That sounds like it will still let the tranny have some defuel. I would think maybe all this stuff will surely disable the engine defuel but you probably have to disable B1130 to have no defuel.

Then on the other hand wouldnt you have to load a tcm file to do anything with the tcm like disable tcm defuel?

Yes, you are correct.

No need to go into the TCM for RPM limiter removal.

why cant i find any of the new tables-im missing something here

You got mail..:)

ok I still havent made it out to try this but I was playing around with a tow tune and changed the following tables

B1115 & B1116 both 3300 - 4000 rpm and 60-100 tps just extended the tables
B1117 4000-4800 all
B1118 3400-5200 all
B1119 3400-4000 all
B1128 3500-4000 all
B1122 3200-3500 .88-1.0
B1124, B1125, B1126, B1130 Disable


I noticed B1130 TCM rpm limiting. That sounds like it will still let the tranny have some defuel. I would think maybe all this stuff will surely disable the engine defuel but you probably have to disable B1130 to have no defuel.

Then on the other hand wouldnt you have to load a tcm file to do anything with the tcm like disable tcm defuel?



Well that fixed it. I tried it with just changing B1114 and it didnt work then I tried it in the above description and it worked great pulled all the way up to 3900rpm where I had the tcm programmed to shift at WOT, The shifts were nice and quick, very smooth.

Well that fixed it. I tried it with just changing B1114 and it didnt work then I tried it in the above description and it worked great pulled all the way up to 3900rpm where I had the tcm programmed to shift at WOT, The shifts were nice and quick, very smooth.Do you mean B1014? It's nice to hear it's working like it should.

OK I am new to EFI live and I just downloaded the update. Do these tables work for the LMM, I cant seem to find them.

Some of them are there, but there are no fuel pressure tables for the LMM yet so B1014 isn't there. Other than that I can't remember off the top of my head what tables are or aren't there for the LMM.

Just to clarify, I don't think you'll be able to remove the rev limiter without B1014.

Josh, yes I meant B1014, sorry. all those 1's I guess I got carried away. :) lol

These tables arent there for the lmm yet. I have tried makeing some lmm tunes and cant get rid of the defuel so far.

Randy

I need to find the time to play with each table to see if it actually takes less tables to get rid of defuel. I just modded the tables I felt needed it and it worked the first time. maybe its only 2-3 tables or so.

Hey Randy would you be interestedin helping me learn this EFILive stuff since you don't live to far away. Any help would be great.

Thanks, Brian

No problem at all I am out in garrison,tx southeast of tyler right now working I will be home early next week around monday or tuesday. I would love to help out.shoot me a pm with what you want done. I still havent had a chance to meet any local dp members

I dont know much but 2 heads are better than 1.

Randy

Thanks I will send you a PM about maybe getting to meet up sometime soon.

Dumb question... How does raising the limiter in the ECM do anything without modifying the TCM? IIRC, the TCM has the shift points set so if this RPM OR this speed is reached, it'll shift.

I know you can manually shift the truck to whatever rpm you want or you can just program the desired shift points into the tcm.

Dumb question... How does raising the limiter in the ECM do anything without modifying the TCM? IIRC, the TCM has the shift points set so if this RPM OR this speed is reached, it'll shift.

Good question.

When running BIG power thru the LBZ sometimes it doesn't want to shift when you tell it to. Without the rev limiter removed, the truck flat lines at 3500RPM and falls on it's face. With the limiter removed, it'll still shift at full power no matter where that shift happens.

Good question.

When running BIG power thru the LBZ sometimes it doesn't want to shift when you tell it to. Without the rev limiter removed, the truck flat lines at 3500RPM and falls on it's face. With the limiter removed, it'll still shift at full power no matter where that shift happens.That was the biggest pain in my ass this year. I've got logs where my truck would sit at 3500 RPM for a full second before it would shift. I think I could have run low 13s or maybe even hit 12s if I'd been able to remove the rev limiter.

i dont think my op soft will work with this
i cant get any of these tables

i dont think my op soft will work with this
i cant get any of these tablesWhat is your OS?

You need to make sure you downloaded the file in this link: http://forum.efilive.com/showthread.php?t=6641

The update to build # 24 does not have these files.

op soft is 6698
i did download those files too--im gonna start all over again tonite after work

It's gotta be a problem with your installation. I just did a tune for OS 6698 yesterday and had all the new tables.

Good question.

When running BIG power thru the LBZ sometimes it doesn't want to shift when you tell it to. Without the rev limiter removed, the truck flat lines at 3500RPM and falls on it's face. With the limiter removed, it'll still shift at full power no matter where that shift happens.

Rob (and others),

What changes have you implemented in your tunes?

So far I have tested the following:
B1115 Pedal Position to Desired Torque
B1102 Torque Based Fuel
B1117 Maximum Fuel Quantity vs. RPM
B1118 Maximum Torque1 vs. RPM
B1119 Maximum Torque2 vs. RPM
B1122 Torque Fuel Limit RPM Conversion
B1014 Pressure Maintain Fuel Limit

With changed shift points the truck still falls flat on its face with the above settings.

What I have not tested:
B1130 TCM RPM Limiting
B1128 Barometric Pressure Torque Limiting

Anyone tested these out at all?

I don't think you'll be able to do anything without modifying 1128. I know on my truck it drops down to 270 at 3500 and 0 at 4000. That will kill your power if the table works like it says it does. I wish I could go out and try it.

Rob (and others),

What changes have you implemented in your tunes?

So far I have tested the following:
B1115 Pedal Position to Desired Torque
B1102 Torque Based Fuel
B1117 Maximum Fuel Quantity vs. RPM
B1118 Maximum Torque1 vs. RPM
B1119 Maximum Torque2 vs. RPM
B1122 Torque Fuel Limit RPM Conversion
B1014 Pressure Maintain Fuel Limit

With changed shift points the truck still falls flat on its face with the above settings.

What I have not tested:
B1130 TCM RPM Limiting
B1128 Barometric Pressure Torque Limiting

Anyone tested these out at all?
Not to hijack the thread but I asked this before but didn't get an answer. See here: http://www.dieselplace.com/forum/showthread.php?t=185391&highlight=b1118
What is the difference between b1118 and b1119?

Not to hijack the thread but I asked this before but didn't get an answer. See here: http://www.dieselplace.com/forum/showthread.php?t=185391&highlight=b1118
What is the difference between b1118 and b1119?

Not sure what they do, but set them both to the max: 1476.1 Ft/lbs across the board.

you have to disable tcm rpmlimiting B1130 to keep the tranny from defueling. I think at least thats what I did and it works great.

Randy

Rob (and others),


What I have not tested:
B1130 TCM RPM Limiting
B1128 Barometric Pressure Torque Limiting

Anyone tested these out at all?

I do have these extended. Also make sure you have B1124/5 disabled.

Ross and Paul were working wih me, for a while, almost daily trying to fix this issue. They would send me a table and I'd mod it and test, then another table and test, etc..........Finally found one that worked. So is it a combo of them all? I guess so.

I do have these extended. Also make sure you have B1124/5 disabled.

Ross and Paul were working wih me, for a while, almost daily trying to fix this issue. They would send me a table and I'd mod it and test, then another table and test, etc..........Finally found one that worked. So is it a combo of them all? I guess so.

I have B1124 but not B1125 disabled. I will add that to the list of mod that I am going to try tonight.

Did you also download the files besides the update to 7.5?

The ones that need to unzipped in the calibrations file
yep i did that too-but when i go into tune and ck for the new tables it says they do not exist- i did something wrong somewhere and now there is so many files all over the place i dont know what is what

On my high hp tune that a few different folks have tweaked on :o:, all I had to do was mod b0104 to get my lbz to pull to 4k. It doesnt work on any of my other tunes so it definently is a combo of tables.

Here is a vid i just took 1st-3rd revving to 4k (not very good vid sorry)pulls good till about 4100 then you can feel it start to sign off. still on the stock blow dryer.
http://www.youtube.com/watch?v=it4-hKrV0Ww

woo hoo finally-now whats up with table b1015?

I meant b1014...

woo hoo finally-now whats up with table b1015?

So you got the tables now?

b1015 is to help maintain rail pressure I would be careful with it though I have seen 28k worth of rail pressure modding this table. That was my first attempt though so I expect it to get better with some trial and error.

Hey don't worry about that B1015 table.. It doesn't do anything ;) :D :D

Brayden

haha right :rolleyes::cool:

Never should have told them.. Now it's all over the internet like Paris & Britney :D

^^^^^ Funny post

so now what about b1021?
since 1015 dosent do anything-ha ha

Paris and Britney :eek:

I see so b1015 is the britney mod, confused by the pressure of the rail? :D

:eek::rolleyes::D:D

ITS OFFICIAL - THE BRITANY MOD.

you guys have to stop this is too funny....

Has anyone else noticed the difference between the B1128 table on the LLY stock tune vs the LBZ stock tune? It seems to be quite a bit different. I think this may be a factor.

I know exactly what you're talking about Donovan. On my stock tune the torque numbers drop down to 0, but on an LBZ tune they stay up to around the mid 400s. I think that table had been a contributing factor in a couple of different problems I was having.

I know exactly what you're talking about Donovan. On my stock tune the torque numbers drop down to 0, but on an LBZ tune they stay up to around the mid 400s. I think that table had been a contributing factor in a couple of different problems I was having.

I am thinking of maxing the whole b1128 table at 1476. Have you (or anyone else) tried this?

I am thinking of maxing the whole b1128 table at 1476. Have you (or anyone else) tried this?
i just did and i think my tranny is still crying-wow did it bang shifts
i have it at 1100 ft lbs at 4000rpm now and blended it down to 900 at 2500 seems a lot better-i do know that 1st,2nd,3rd,and most of 4th from a 10mph start is nothing but pure tire smoke and the beautiful sound of 8 screaming oil burners at4200rpm:D

Yep. That did it. I hit 4000 RPM no problem and I have never seen 37s come to live at 30-40mph before like this. WOW! Thanks for all the help guys!

Guys, I have changed every table in this post except b1015, because I'm unsure of how it works. I'm still seeing a rev limiter. Can anyone help me out?

Guys, I have changed every table in this post except b1015, because I'm unsure of how it works. I'm still seeing a rev limiter. Can anyone help me out?

Also look at tables D5194, 5195, 5196, and 5197 in the TCM...

Guys, I have changed every table in this post except b1015, because I'm unsure of how it works. I'm still seeing a rev limiter. Can anyone help me out?

You need to at least change the cells in the 3550 and 4000 RPM range. That's the show stopper if you have changed the other tables correctly.

ehhh. b1015 doesnt have rpm reference points it has flow vs current.or i'm confused as to what you mean

ehhh. b1015 doesnt have rpm reference points it has flow vs current.or i'm confused as to what you mean

Delexiaaa. and I highlighted it in red. :Pshyco::Pshyco:

Guys, I have changed every table in this post except b1015, because I'm unsure of how it works. I'm still seeing a rev limiter. Can anyone help me out?
rpm/torque limit in ecm is 1124,25,26,30
tcm is d5197
some other tables will need to be adjusted for power at a higher rpm
1115,16,17,18,19,22,28and 1014

how do you get to the TCM tables?

have to read the TCM when the pull down menu pops up choose the appropriate allison TCM to read

how do you get to the TCM tables?
you will have to write a tune for the tcm and disable table 5197 or the tcm will govern torque and rpm
copy stock tcm file then write a tune
same as ecm

I cant tell anymore if I've removed the limiter or not. My last tune has enough power at full throttle in 1st and 2nd the tires just free spin. I noticed it shifted at 37xx rpm on one of the logs with the tires spinning. The one time it did make a shift without spinning was about normal, which is expected in Drive. But when in Manual it still hits the limiter around 3400. I'm gonna work on the TCM a little to see if I can smooth some things out. Theres no rush on any of it until I get some new rubber. It's pointless to try and log a run now. Can anyone reference me to a good Boost Tuning thread? I'm having some problems making steady boost.

Thanks for the help guys

Well I changed tune last night and hammered it on the way to work!
WOW!! It was haulin then all at once BAM, CEL: P046c (I guess I missed one) P0700, and P0777..WTF! While the CEL was lit, it wouldn't up-shift but had no trouble accelerating over 4000 rpm. Why would I get that P0777?

Well I changed tune last night and hammered it on the way to work!
WOW!! It was haulin then all at once BAM, CEL: P046c (I guess I missed one) P0700, and P0777..WTF! While the CEL was lit, it wouldn't up-shift but had no trouble accelerating over 4000 rpm. Why would I get that P0777?

Sounds like you slipped some clutchs, Believe the c3's were probably not liking all that power.

I ran without changing tcm 5157 for some time and couldn't tell the difference. I did however changed ECM B1130 from the get go. I agree that it's hard to have a basis for comparison when the tires are spinning all over the place..lol

I ran without changing tcm 5157 for some time and couldn't tell the difference. I did however changed ECM B1130 from the get go. I agree that it's hard to have a basis for comparison when the tires are spinning all over the place..lol
From my testing you don't need to tune the TCM for the rpm limiter to be removed.

I have not been that fortunate yet. i'll have to go back through my tune and see if I missed something.

From my testing you don't need to tune the TCM for the rpm limiter to be removed.
wont the tcm tell the ecm to limit torque and/or rpm?

wont the tcm tell the ecm to limit torque and/or rpm?

Yes it does. But in my experience the tcm doesn't need to be changed to remove the RPM limit.

Something just came out today in Beta to remove the torque limiting in the tcm which should get the 6 speeds shifting much better under big power. I'll be testing this week. Stay tuned.

by torque limiting do you mean defuel during shifts?
my o/s will let me turn off tcm torque limiting

by torque limiting do you mean defuel during shifts?
my o/s will let me turn off tcm torque limiting

Totally different thing. The tcm torque limiting button in the ECM doesn't switch off the torque limiting that the TCM sends to the ECM, this new feature does.

It shuts off the torque limiting signal to the ECM, hopefully allowing the ECM to let us defuel where/when we want.

i already have that in my tcm tables-d5197 right?

Well I changed tune last night and hammered it on the way to work!
WOW!! It was haulin then all at once BAM, CEL: P046c (I guess I missed one) P0700, and P0777..WTF! While the CEL was lit, it wouldn't up-shift but had no trouble accelerating over 4000 rpm. Why would I get that P0777?I have an update! I have been experimenting and I have found if I shift manually over 4000 rpm it screams and clicks the shifts off smoothly! The only codes I got this time was a P046c and 087. The truck never stumbled or even hiccuped.
It blew past the 110 mark faster than I have ever seen! Looks like a lift pump is next in line, then for sure a built tranny!

i already have that in my tcm tables-d5197 right?
Yep D5197. In my little bit of testing it doesn't get me too fired up.:mad:

So did anyone ever figure out exactly what table(s) to modify to remove the rev limiter? I read through all 10 pages and didn't see a consensus...

So did anyone ever figure out exactly what table(s) to modify to remove the rev limiter? I read through all 10 pages and didn't see a consensus...Post #1 and #27 did it for me