Torque Management?
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 7,135
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From: banana republic
It seems that GM gives us more hp and torque, but the car does not put this to full use on the strip. Are they trying to save the rear drive train? Will people who do tuning be at risk for some breakage on the strip?
Burning Brakes
Joined: Aug 2004
Posts: 902
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From: Pensacola FL
C6 FAQ Master
Originally Posted by 68roadster
It seems that GM gives us more hp and torque, but the car does not put this to full use on the strip. Are they trying to save the rear drive train? Will people who do tuning be at risk for some breakage on the strip?
This is not unique to the C6, but is part of owning a sports car that gets pushed to its engineered limits. Corvettes, NSXs, Porsches, BMWs... I have seen all brands break occasionally at the strip with stock parts and stock motors. It's the law of probability and "whether or not you feel lucky... well do ya?"
If you drag race with a stock 400HP car, you stand a much higher chance of breaking the torque tube bushing, output shaft or differential. If you are adding slicks... I would upgrade these from the start. Now start doing HP mods... watch out!
Start ordering your parts HERE
(Or break them, and have GM put in your new *better* parts on their dime... hmmmm, how did these break???)
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 7,135
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From: banana republic
All good points. I would be the last to say that I think the Corvette should be a dragster. It is a world class sportscar. Makes me rethink drag racing after driving my car to Bowling Green, KY.
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 5,730
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From: VENTURA Ca
The torque management on the C6 is horrendous.
I have a 427 in mine and the TM just kills it.
At light throttle it feels like a 427. At WOT it just lays down and feels anemic.
I have a 427 in mine and the TM just kills it.
At light throttle it feels like a 427. At WOT it just lays down and feels anemic.
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Team Owner
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From: Houston, TX
I'd appreciate some help from somebody who understands what the Torque Management is actually doing on a C6 manual. By that, I mean, how does it work, and why?
It was my understanding that on the C5 it only effected A4 cars.
How does it differ from traction control, what is it's purpose, and what does it actually do? I can understand it sensing loss of traction and backing things down a bit (although, I thought that's what traction control is for). But in my simple mind, if a car dyno's at 345 (or whatever) rwhp, then that is what it is going to put down. How does torque management make 345 rwhp into something less than that - and under what circumstances.
Thanks for any help understanding this.
It was my understanding that on the C5 it only effected A4 cars.
How does it differ from traction control, what is it's purpose, and what does it actually do? I can understand it sensing loss of traction and backing things down a bit (although, I thought that's what traction control is for). But in my simple mind, if a car dyno's at 345 (or whatever) rwhp, then that is what it is going to put down. How does torque management make 345 rwhp into something less than that - and under what circumstances.
Thanks for any help understanding this.
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Le Mans Master
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From: delmont pa
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Originally Posted by jschindler
I'd appreciate some help from somebody who understands what the Torque Management is actually doing on a C6 manual. By that, I mean, how does it work, and why?
It was my understanding that on the C5 it only effected A4 cars.
How does it differ from traction control, what is it's purpose, and what does it actually do? I can understand it sensing loss of traction and backing things down a bit (although, I thought that's what traction control is for). But in my simple mind, if a car dyno's at 345 (or whatever) rwhp, then that is what it is going to put down. How does torque management make 345 rwhp into something less than that - and under what circumstances.
Thanks for any help understanding this.
It was my understanding that on the C5 it only effected A4 cars.
How does it differ from traction control, what is it's purpose, and what does it actually do? I can understand it sensing loss of traction and backing things down a bit (although, I thought that's what traction control is for). But in my simple mind, if a car dyno's at 345 (or whatever) rwhp, then that is what it is going to put down. How does torque management make 345 rwhp into something less than that - and under what circumstances.
Thanks for any help understanding this.
Team Owner
Joined: Jun 2001
Posts: 26,714
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From: Houston, TX
Originally Posted by clem zahrobsky
TM is used between shifts to lessen the power to the trans by backing out some timing for a millisecond
Thanks for your help
Team Owner
Joined: Sep 1999
Posts: 41,732
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From: Springfield MO
Originally Posted by jschindler
Ok, that makes sense - but what about a six speed car? I keep reading about the C6 having it on six speeds.
Thanks for your help
Thanks for your help
Don't know if the C6 6-speed has the torque management but I could see where it could be easily incorporated. Since the 6-speed already has a limit switch to let the PCM know when the clutch pedal is depressed it would be easy to have that limit switch activate the torque management to reduce power during shifting.
Race Director
Joined: May 2000
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Torque management is used on both the automatic and manual transmission cars (at least on the C5, and I don't see why not on the C6 with its higher horsepower). Also sometimes referred to as "abuse algorithm."
I've run into it on my MN6 when fooling around with modifications made by c4c5specialist, and we went through it on the dyno and Tech II.
Here are a couple of links to old CorvetteForum threads that discuss this:
http://forums.corvetteforum.com/arch.../t-276231.html
http://forums.corvetteforum.com/arch.../t-276339.html
http://forums.corvetteforum.com/arch.../t-286999.html
Some quotes for those who don't want to bother to go to the links:
From none other than the highly esteemed "hcvone:"
04-10-2002, 09:07 PM
We have found even switching the active handling off and the traction control off that there is still "some" torque management with both automatic and 6 speed cars, we are working on this problem as we speak.
FRISKY
04-11-2002, 01:55 AM
My 2002 Z06 drops the timing to 17 degrees when the torque gets to 350 lb ft at the rear wheels. It is progressive, smooth and happens very fast. It doesn't matter if you have AH/TC on or off. Any scanner will show you where the torque management is set and a program like LS1 Edit is capable of changing the settings.
kwillmorth
04-25-2002, 12:56 PM
...Finally - I also noted that the "Torque Management" system appears to be focused on auto trans C5's. The only case where I note that it might have any reason to be activated in the M12 trans cars is the "under severe activity" component. In other words, reving the engine to 6,000rpm and side stepping the clutch, power shifting under full throttle acceleration, or rocking from first to reverse and back again to get unstuck, etc. It does not appear that under even the most hard run on a road race track, that the system would ever be activated, or if it is, noticed in any way. The setting of 349 ft. lbs does not limit the car to 349 ft. lbs (from 400), all the time, just when it is determined, through various sensors, that the car is in danger of being damaged.
Hope this helps:
I've run into it on my MN6 when fooling around with modifications made by c4c5specialist, and we went through it on the dyno and Tech II.
Here are a couple of links to old CorvetteForum threads that discuss this:
http://forums.corvetteforum.com/arch.../t-276231.html
http://forums.corvetteforum.com/arch.../t-276339.html
http://forums.corvetteforum.com/arch.../t-286999.html
Some quotes for those who don't want to bother to go to the links:
From none other than the highly esteemed "hcvone:"
04-10-2002, 09:07 PM
We have found even switching the active handling off and the traction control off that there is still "some" torque management with both automatic and 6 speed cars, we are working on this problem as we speak.
FRISKY
04-11-2002, 01:55 AM
My 2002 Z06 drops the timing to 17 degrees when the torque gets to 350 lb ft at the rear wheels. It is progressive, smooth and happens very fast. It doesn't matter if you have AH/TC on or off. Any scanner will show you where the torque management is set and a program like LS1 Edit is capable of changing the settings.
kwillmorth
04-25-2002, 12:56 PM
...Finally - I also noted that the "Torque Management" system appears to be focused on auto trans C5's. The only case where I note that it might have any reason to be activated in the M12 trans cars is the "under severe activity" component. In other words, reving the engine to 6,000rpm and side stepping the clutch, power shifting under full throttle acceleration, or rocking from first to reverse and back again to get unstuck, etc. It does not appear that under even the most hard run on a road race track, that the system would ever be activated, or if it is, noticed in any way. The setting of 349 ft. lbs does not limit the car to 349 ft. lbs (from 400), all the time, just when it is determined, through various sensors, that the car is in danger of being damaged.
Hope this helps:
Last edited by EHS; Oct 31, 2004 at 09:17 AM.
