torque management
Thread Starter
Drifting
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
torque management
Ive done a search and havent found the answer Im looking for. Has anyone done a back to back runs with the TM and after removed with tuning software such as hp tuners? How much difference ET and MPH in the quarter. Thanks, Normand
Drifting
Joined: Jan 2008
Posts: 1,529
Likes: 23
I know with a z06 TM helps negate wheel spin with stock tires so the gain in et is zero. With DR's there would be a difference from TM holding you back some so thats where your gains would be.
Since dgdoc doesn't seem to be around here is some responses that I got from him regarding TM in a thread I started in March:
Quote:
Originally Posted by walterm32
When you are tuning c6z's are you completly taking out torque management or just raising the torque levels along the curve in each gear (I'm assuming that is how it is applied). It seems like taking it completely out might really cause things to break easily on a car with this much HP and torque That's obviously why GM implemented it to save them $$ from replacing drivetrain parts. I'm looking for a SAFE happy medium between the GM TM settings and having it completley gone (if there is such a thing) when I get it tuned. Any advice on the subject? actual #'s?
You are correct, GM put this in to limit their warranty exposure.
On stock tires, I've found that the .2 second throttle reduction associated with TM helps limit wheelspin on shifts. And if you're running with the stock EMT's, this can actually be beneficial.
If you're running drag radials or slicks, it's a different story and eliminating TM can improve your times a bit.
However, in either case, eliminating or reducing TM will increase the probability of driveline breakage. And even with TM enabled, you can still break stuff.
Quote:
Originally Posted by walterm32
Anyone raise the limits some as opposed to taking it all of the way out. I'd just like to know what I'm talking about and what the best and safest way to adjust it is before the tuner does whatever HE feels is best. I would definitely agree that the driver and how they accellerate and shift has almost everything to do with breaking parts unless you have tons of HP, so is it even worth messing with unless your trying to squeeze every tenth you can at the track?
Read my post above. If you're after the best times with stock tires, you would do best to leave TM enabled to help limit wheelspin on shifts.
I've reviewed tons of data logs from C6Z's and even with TM cutting the throttle back on shifts, there is still considerable wheelspin. Turn off TM and you'll end up extending the period when you're spinning.
I realize there has been a lot of misinformation on the impact of TM on times at the track. However, after extensive analysis, it is now clear to me that ET's are not being hurt by TM if you're running with the stock EMTs.
Heres the thread:
http://forums.corvetteforum.com/c6-z...-question.html
It doesn't answer your question exactly about actual dragstrip #'s but should give you what your looking for.
Since dgdoc doesn't seem to be around here is some responses that I got from him regarding TM in a thread I started in March:
Quote:
Originally Posted by walterm32
When you are tuning c6z's are you completly taking out torque management or just raising the torque levels along the curve in each gear (I'm assuming that is how it is applied). It seems like taking it completely out might really cause things to break easily on a car with this much HP and torque That's obviously why GM implemented it to save them $$ from replacing drivetrain parts. I'm looking for a SAFE happy medium between the GM TM settings and having it completley gone (if there is such a thing) when I get it tuned. Any advice on the subject? actual #'s?
You are correct, GM put this in to limit their warranty exposure.
On stock tires, I've found that the .2 second throttle reduction associated with TM helps limit wheelspin on shifts. And if you're running with the stock EMT's, this can actually be beneficial.
If you're running drag radials or slicks, it's a different story and eliminating TM can improve your times a bit.
However, in either case, eliminating or reducing TM will increase the probability of driveline breakage. And even with TM enabled, you can still break stuff.
Quote:
Originally Posted by walterm32
Anyone raise the limits some as opposed to taking it all of the way out. I'd just like to know what I'm talking about and what the best and safest way to adjust it is before the tuner does whatever HE feels is best. I would definitely agree that the driver and how they accellerate and shift has almost everything to do with breaking parts unless you have tons of HP, so is it even worth messing with unless your trying to squeeze every tenth you can at the track?
Read my post above. If you're after the best times with stock tires, you would do best to leave TM enabled to help limit wheelspin on shifts.
I've reviewed tons of data logs from C6Z's and even with TM cutting the throttle back on shifts, there is still considerable wheelspin. Turn off TM and you'll end up extending the period when you're spinning.
I realize there has been a lot of misinformation on the impact of TM on times at the track. However, after extensive analysis, it is now clear to me that ET's are not being hurt by TM if you're running with the stock EMTs.
Heres the thread:
http://forums.corvetteforum.com/c6-z...-question.html
It doesn't answer your question exactly about actual dragstrip #'s but should give you what your looking for.
Last edited by walterm32; Nov 10, 2008 at 01:21 PM.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
It was already modded, but with the only parameter being changed in the computer being TM, without the newer TM tune, my car went 12.0's at 121/122mph and with the newer tune, it goes 11.3's and 11.4's at 124-127mph. No other mods were performed (car was already modded) except for the tuning change back in Feb/March. 
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
I can't remember the MPH difference but the ET difference was .3 seconds and ended up being .1 second for each of the three shifts.
Melting Slicks
Joined: Jun 2004
Posts: 3,440
Likes: 658
From: panama city beach florida USA
St. Jude Donor '09
thats about what i got on a good drag strip,on the street it makes the car a handful
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Instructor
Joined: Oct 2005
Posts: 224
Likes: 0
From: FL
I have experienced a 2 tenth difference in 1/8 mile racing..... I removed the TM at the track and it was a night and day change. The car felt like a large bog after each shift with TM on. Much more spin to deal with on the Goodyears.....Nitto Invos held much better.
Also TM negatively effects ET more if you powershift. Taking the TM off was much more of a change than my C-5 Z06. I was very surprised and running down the track requires a lot more attention and correction.
Only 1/4 mile runs have been after the cam/ header install.
I think I still have the stock HP Tuner logs somplace on my laptop.
Also TM negatively effects ET more if you powershift. Taking the TM off was much more of a change than my C-5 Z06. I was very surprised and running down the track requires a lot more attention and correction.
Only 1/4 mile runs have been after the cam/ header install.
I think I still have the stock HP Tuner logs somplace on my laptop.
