Torque Management: Pics of how it works

[justin]

Originally Posted by 69SS

Have any charts after a custom tune to compare by?

Tell me what exactly you want to see... I've got probably 500 logs I've made of my vehicles and customers I can dig through and compare for you.
Can definitely show you in a time-based chart format what Torque Management looks like vs no TM.

[justin]

This screen shot here is from Mauro's truck and has 75% of TM removed. You can still see the major timing dip right during the shift there.


And this log is of my truck and has no TM. You can see that timing stays flat through the shift at around frame 3385.

[vhato]

Sweet!!! Good work

[SS_355_Stripes]

Hey vhato, is TM only on new vehicles or does it do anything to tbi's (mines an 89).

[Atomic]

I thought they started it in 96ish and have slowly introduced more and more of it. The 07+ are supposedly less aggressively de-tuned from the factory.

[vhato]

I wouldn't think so. You have a 700r4 Automatic so much of Torque Managements functions wouldn't be utilized anyway. I maybe '93 GM started with the 4L60-E, though I could be wrong. It could possibly ave Torque Management, but I highly doubt it also. I agree with Atomic, 1996, the year of the Vortec 5700 as well as the introduction of OBDII, is probably when GM introduced TM to the truck world.

[Troll]

I believe it started in 96. Even then it was only to keep you from trashing the tranny from doing something like going from reverse to drive without stopping first. I really noticed it big time when they came out with the 99+ trucks. My 96 Z71 would light up the tires from a stop with a posi. My wife's 2001 5.3L wouldn't even break the tires loose unless you were turning and it was a 2wd with more hp than the 96.

[SS_355_Stripes]

talkin bout trannys, Im on 3rd one its just a 700R4 stock, so were the other ones. they kept losing gears and slipping like mad, i dont have the money to build one, but would this be because i dont have TM or just something else?

[i12cunekid]

Torque Management is also a way to help the manufactures with sales. Due to high insurance rates that go along with high horse power and quick accelerating vehicles, manufactures limit the vehicles. Same thing with the top speed limiting. I'm sure durability and reliability fit in there too. But GM is not the only manufacture to limit their engine output. Other manufactures may restrict their vehicles in other ways or similar means. Can't remember where I read it, but I did get it from an article somewhere.

[vhato]

You may be correct with other manufacturers, but based on my findings with GM vehicles, with 100% TM enabled in every menu, the HP loss really isn't much. So little, that if you measure HP using an old analog dyno, the variances in the old dyno are greater between runs than the loss of power due to Torque Management.

[96Z71_4x4]

What program are you using to pull this data and where can I get it ?

[cmitchell17]

Im ordering efi live to start tuning my 2000 5.3 ext cab.
Im now considering leaving tm mosly engauged.

One I dont even get traction now and spin the tires through first into second on the stock tune.

Second everyone I hear from says they only last about 130k which I dont believe but I want to be on the safe side.

[justin]

Originally Posted by cmitchell17

Im ordering efi live to start tuning my 2000 5.3 ext cab.
Im now considering leaving tm mosly engauged.

One I dont even get traction now and spin the tires through first into second on the stock tune.

Second everyone I hear from says they only last about 130k which I dont believe but I want to be on the safe side.

Good choice on the product decision. Look for an intro to EFI Live course very soon from EFI101.com.

[cmitchell17]

Alright thanks ill check it out, ill need it.

Can you do as much with trans tuning as you can with a shift kit?
What all does a shift kit do?

[BowtieWarrior]

Hey this Thread is Great.. I had no idea that Tm was programmed for the life of me I could not figure out why a 300 hp 5.3 was a pig but I know no. thank you .

ok my real question is I have a 1997 5.7 vortec does anyone know if the hypertec programmer removes TM? and has any one herd of ed wright and fast chip??

thanks bowtie

[Atomic]

Ed wright is a good tuner i think...or so ive heard.

the hypertech does not remove any, the only one that does is the diablo.

[YULLOSE]

I just bought a mint '01 2500 4x4 Suburban with the 8.1 in it...

It's obvious to me that it's not running anywhere near it's potential due to all the restraints put on it via the PCM.

What I would like to see is a PCM program that makes my truck run like they did in "The good ole days"...
Those were the days when the throttle blades immediately opened 100% when your foot hit the floor.

The timing was at a fixed point during idle, and the advance curve was all in by 3000rpm or so... No retard during shifts... and timing never went below the initial setting.

The engine was fed all the fuel it needed to make as much power as it was capable of.

Basically, I'd like to see my engine run as if it had a carburetor and distributor in it, and a solid cable from the gas pedal to the throttlebody. (1:1 response)

I don't need to be protected from myself... or protected from self-inflicted damage to my truck.
If I want to twist off a driveshaft.. then dangit, I should have that ability.

Use to be that GM would beef-up drivetrain parts if they had breakage problems... They didn't choke off power.

Seems to me this is a clear cut case of GM protecting themselves from warranty claims. Instead of building better/stronger products, they govern the power via the PCM.

[justin]

Originally Posted by YULLOSE

I just bought a mint '01 2500 4x4 Suburban with the 8.1 in it...

It's obvious to me that it's not running anywhere near it's potential due to all the restraints put on it via the PCM.

What I would like to see is a PCM program that makes my truck run like they did in "The good ole days"...
Those were the days when the throttle blades immediately opened 100% when your foot hit the floor.

The timing was at a fixed point during idle, and the advance curve was all in by 3000rpm or so... No retard during shifts... and timing never went below the initial setting.

The engine was fed all the fuel it needed to make as much power as it was capable of.

Basically, I'd like to see my engine run as if it had a carburetor and distributor in it, and a solid cable from the gas pedal to the throttlebody. (1:1 response)

I don't need to be protected from myself... or protected from self-inflicted damage to my truck.
If I want to twist off a driveshaft.. then dangit, I should have that ability.

Use to be that GM would beef-up drivetrain parts if they had breakage problems... They didn't choke off power.

Seems to me this is a clear cut case of GM protecting themselves from warranty claims. Instead of building better/stronger products, they govern the power via the PCM.

The PCM is nowhere near as bad as you're making it seem. It's goal isn't to restrain your engine, but rather to provide you with a good amount of power at all load points while also being able to run a few hundred thousand miles. Yes it can be optimized to make more power and be more drivable, but you have to realize that each calibration that GM releases is designed to run in all areas, all environments and be able to handle poor quality gas without issue.

[Mark07Silvy]

Just ordered Predator programmer to remove TM. My 2007 silverado has 5 yr. 100k mile powertrain warranty. BRING ON THE CARNAGE!!!

[Tafternoon]

Hmmm........