Disabling torque management

millerwd · July 7, 2004

I have a 04 2500HD 6.0l. The launch on this unit is very disapointing. When powerbraking it's just a dawg. It has a limited slip diff so i realize it takes a little more power to to spin two tires than one. Be that at is may my '96 Z71 w/5.7l had a much better hole shot.

there are two items I would like to deal with a this time.

1. I am not real familiar with the "torgue managment" system on this unit. What is the easiest way to disable torgue managment? The tow/haul slection has little impact on the launch.

2. what is the easiest way to raise or eliminate the 100 MPH speed limit?

Also is any one aware of a PC program that allows access to the Eprom data in this unit. i have the ODB interface cable to connect ot my laptop. I realize I am wading into deeper water here but somewhere out the in the ether there has to be programming specifications.

Thankyou for your time, BillM

snoman · July 7, 2004

"Power braking" is hard on trannies so you are not on the right track for long unit life. On the speed limit most ECM upgrades can remove 100MPH limit and a hypertech will let you select a new limit as well.

millerwd · July 7, 2004

Thanks so much for that bit of info snoman.(laughing out loud)

I believe this is the "high performance" thread of Technical pages so powerbraking is going to be discussed. How else will I win the local burnout contest?

If you think powerbraking is hard on trannies you need to take motor mounts into consideration also. It'll tear the rubber apart in no time, the motort then rotates within the engine compartment, distorting various linkages and finally dinging tthe snot out of the hood..

That's when you connect a safety chain to the engine and frame.

snoman · July 7, 2004

Thanks so much for that bit of info snoman.(laughing out loud)
I believe this is the "high performance" thread of Technical pages so powerbraking is going to be discussed. How else will I win the local burnout contest?

If you think powerbraking is hard on trannies you need to take motor mounts into consideration also. It'll tear the rubber apart in no time, the motort then rotates within the engine compartment, distorting various linkages and finally dinging tthe snot out of the hood..

That's when you connect a safety chain to the engine and frame.

I did not say you could not discuss it. I just said it is hard on tranny. When you stall it like that it really can flash heat the fluid in the converter and cluches very quickly. If power braking is your bag, I suggest you install a lot deeper axle ratios in truck to minimize driveline strain while destroying your tires. The motor mounts are the least of your problems though strain there too would be reduced with deeper axle gears also.

juiced01s10 · July 7, 2004

get a westers tune and that will eliminate TQ managment, adjust shift points and rev limiter. also get rid of the speed limiter. best bang for the buck mod for the full size trucks.

fastdrvr23 · July 7, 2004

get a westers tune and that will eliminate TQ managment, adjust shift points and rev limiter. also get rid of the speed limiter. best bang for the buck mod for the full size trucks.

I agree totally. Wester's rocks...

Also, sorry to hear about your engine man...

millerwd · July 7, 2004

fastdrvr, my engines fine. the incident i decribed happened on my fathers 68 Buick Wildcat (430 cu in) when I was sixteen.

Almost 40 years ago!

Hang on i'm going on a comical rant here:

I don't wanna pay Westers, I won't pay Westers for changing ones and zeros.

I wanna do it myself.

There is no doubt in my mind there is a computer science major/geek/hacker doing this on the side.

Or a student at Wyoming Tech attending the Power tech program.

If Paul Allen can launch a suborbital spacecreaft then some geek can figure out how to to set a MPH limitter and disable torgue management.

The problem is they are probably devoting their energy to 12 second ricers rather than a 6000# GMC slug-o-matic.

The bottom line boys, is all these changes and tune ups are stored on a CD somewhere..........

it's just a matter of finding the CD

Ok......I'm better now.

vortec350 · July 7, 2004

If you wont let anyone else do it for you then get LS1 edit.But if you dont know exactly what you are doin you can ruin the engine and tranny.Good luck

fastdrvr23 · July 7, 2004

fastdrvr, my engines fine. the incident i decribed happened on my fathers 68 Buick Wildcat (430 cu in) when I was sixteen.
Almost 40 years ago!

Hang on i'm going on a comical rant here:

I don't wanna pay Westers, I won't pay Westers for changing ones and zeros.

I wanna do it myself.

There is no doubt in my mind there is a computer science major/geek/hacker doing this on the side.

Or a student at Wyoming Tech attending the Power tech program.

If Paul Allen can launch a suborbital spacecreaft then some geek can figure out how to to set a MPH limitter and disable torgue management.

The problem is they are probably devoting their energy to 12 second ricers rather than a 6000# GMC slug-o-matic.

The bottom line boys, is all these changes and tune ups are stored on a CD somewhere..........

it's just a matter of finding the CD

Ok......I'm better now.

My bad man, I was telling Juiced01S10 I was sorry that he blew his motor...I wasn't real clear. Sorry.

The codes for LS1 edit are out there, just check at ls1tech.com, they have a lot of good stuff.

There's another company that makes software a little cheaper, but I can't remember what its called right off. Anyways, good luck!!!

millerwd · July 7, 2004

I think this is what I'm looking for.

Thanks alot guys for all the feedback.

http://www.hptuners.com/forum/YaBB.pl?boar...;num=1075356454

BillM

99Silver6.0 · July 7, 2004

Its easy to use. HPTuners would be your best bet. Pretty much the same as Edit. Edit or HPTuners really is the only way to get rid of TM completely. Ive had all of TM gone for a year and a half with no problems. Im gonna put back maybe 20% after I install my TransGo and converter. If you get either tuning prog and use it for a while, Im sure you will learn how to do A/F tuning. Then just start adding timing till you get knock. That will make things interesting.

airdeano · July 9, 2004

the cure:

TORQUE CONVERTER

Yank TT2600 (retains tow capacity)

Yank TT3200 (4000pound tow capacity)

Yank Truck Converters

then programming. due to the lighter inertia weight of the converter, this will

need to be taken into for programming.

airdeano

Chevyfreek · July 13, 2004

With the cost of these trucks I had no problem paying for a Westers Garage tune. Lyndon at Westers has the experience to do custom tunes right and with the warranty he offers it was just the best way for me to go. It is good to want to do it yourself, but something I would be leary to do myself. Good luck with it...

I do agree that torque managment has a bunch to do with the performance of these trucks. My truck runs better than it ever did from the factory with the 93 octane hot tune I am running. The difference over stock is night and day. I still have the recommended level of TQ management that Westers suggests for a stock tranny. It is an option to have it completely removed though. I would not do this unless I had the trans built up and I would do the Yank stall converter as well. I am sure those upgrades with the neccesary changes to my Westers tune would yield great results...

millerwd · July 13, 2004

Chevyfreek, thanx for adding to the thread.

Your comment about the transmission is very interesting. I wonder how many clutch assemblies in a 4L80E have been damaged due to excessive engine horsepower?

I'm sure it is possible. It's just intrigueing to debate what would go first in a distructive test.

The torque converter.

The transmission.

The transfer case ( in the case of the K series)

Or, the rear end?

I have no idea what the differences are between tow mode and tow mode not are.

But I believe it's just different instructions in the ECM (software).

Wouldn't it be interesting to see just how fast this transmission is capable of shifting? Tow mode could be reprogrammed as "race" mode.

we are just in the infancy of self tuning these machines. It's all very intriugeing.

Later, BillM

Chevyfreek · July 13, 2004

Bill,

You bring up some interesting points about what the powertrain in these trucks can handle. I have read numerous posts on this topic and they differ quite a bit. Some people have had no problems having TQ management removed and some people have had multiple problems with it removed. I guess it depends on what kind of power you are making under the hood and how hard you drive the truck. I would venture to guess that anything could go out at any given time under the right circumstances. If you are running a supercharger with 100 shot of nitrous doing 1/4 mile drags with a stock trans and no TQ management you will probably be picking up the peices after any given run. The chance is always there even with built up powertrain components.

As far as the T/H mode goes it does make changes to the converter lock-up, shift firmness, and how long the trans will hold a gear. This is all optimized for carrying a load. With my Westers tune the shifts are very firm and quick in T/H mode. The downshifts when you step on it are almost instant. So there is a difference between the two for sure.

Custom tunes are the way to go for these trucks to get more HP & TQ. That is a for sure thing, even more so as you add aftermarket performance parts. Money is the only limitation...