Can you tune out torque management??

 

yes

 

As far as I know it is possible on the '05 thru the '07, not positive about the '08 but I would think so.

 

They way I understand it is, it doesn't get eliminated, it gets altered by raising the computer tolerences. But all in all, yes it can be tuned out.

 

There was a series of poosts on this recently and if I remember the gist of it, yes you can take out or sufficiently reduce the TM. However one poster, unfortunately I do not remember who, recommended only taking the TM out on up shifts, not downshifts.

 

Is this true that it only works up to 3000 rpm

 

I was one of the members recommending leaving the downshift TM alone. I live in the NE and did my preliminary testing during very cold weather. With DS TM off, the downshifting was so abrupt that it caused the tires to skid with the throttle closed and kept my hands full controlling an open throttle downshift (runflats in the winter are like driving on plastic). Sure, I could learn to get used to it but why bother?

Now that it's a little warmer, I'm re-testing it with Open Throttle DS TM off and Closed Throttle DS TM on (I see little benefit from disabling CTDSTM from a performance standpoint as yet). So far I'm having better results than during the winter but I haven't spent a lot of time testing it in turns where it's easier to break loose.

I'm all for performance but safety should come first. In warmer climates it's probably hardly an issue. You just have to decide whether you like being jerked around.

Bottom line: Reducing the upshift TM is where you gain the most performance. I went from a 12.41 1/4 ET down to 12.05 and most of that can be attributed to TM. Don't forget, that only accounts for 2 shifts!

 

The two shifts are 1st to 2nd and 2nd to 3rd????

 

Yes and no. You can tune out TM on upshifts as mentioned above and which saved me about .15-.20 in ET. You cannot, however, eliminate TM at launch from a dead stop.

 

Yes, for the 2.56 ratio C6's. We cross the 1/4 marker at the top of third gear. I imagine 08 2.73's probably cross just after shifting into 4th gear.

 

No, not true. TM is evident in some shape or form throughout the rpm band.

 

Yep

 

Just to clarify, if your car was tuned with HPtuners prior to Sept 25 2007 (before release 2.2), the TM limits could only be altered in certain areas.

Now, I'm not a pro, but when my car was tuned with version 1.8 by a pro, there was no REAL noticeable difference in TM. Everything dealing with TM was raised to max limits yet nothing felt drastically improved.

Fast forward to release 2.2. There is now a Master switch to disable 4 areas of TM...

Results of disabling each individually...

1. Upshift TM: You now own a completely different car. The car feels like it re-launches with each gear change. It's truly the most bang for the buck. Worth the price right there.

2. Open Throttle TM: Disabling this shifts the trans hard into a lower gear whenever you command a downshift. The important part is, depending on which gear you're in and how far you press the pedal, it may bang down a FEW gears. You better be ready because all your newfound TQ will melt your tires and could have you facing pretty green scenery in a split second. Note: The scenery isn't quite as pretty when viewed through the windshield with no pavement in your immediate future.

3. Closed Throttle TM: Bangs into the next lower gear while coasting. Doesn't make a lot of sense to me to have the trans bang down a gear when a softer DS accomplishes the same task pleasantly... you're off the throttle, why disrupt the suspension and balance of the car? Have you ever driven a manual and downshifted without the clutch? You haven't? OK, it's like... Hello, forehead?... Meet Mr Windshield.

4. Garage Shift TM: The garage shift is supposed to make it less eventful shifting from P or N into R or D. I don't know of anyone who noticed any difference. Some believe there may be some hidden benefit for reducing other parts of TM and disable it. Until that's proven I'm leaving mine on figuring it may in some small way reduce drivetrain wear while parking etc. We've all had daily drivers where the universal joints "clunk" after a few years.

Are there other areas of TM? Yes. But this is what we can control now for the biggest differences. In time, the programmers should be able to unlock more hidden features. You have to remember, GM set TM limits to protect the vehicle and passengers. It maintains a pleasant ride while giving exceptional performance. Everyone perceives "exceptional" differently but altering TM will definately have an impact on system longevity and safety. There's always a trade off. Some parts will benefit from less slip, while others will be harmed by harder shifts. Pick your poison.

All that being said, I'm just a novice using HPT. I'm learning as I go and like to hear others experiences and opinions. Pro tuners, such as RevExtreme, ECS & CoW, can do a LOT more for your car and some claim to be able to remove the launch TM if you bring them your car.

AND.. don't forget to read the threads pertaining to the new GM scanner which may void your drivetrain warranty if you alter the GM tune. I was already tuned before this "news" was released so I can't be saved. I just want to be as careful as I can because I'll have to pay for any mistakes GM thinks I made. But I WILL enjoy this car right up until the day I break it.

 

Are you saying there's a single switch that can be toggled for upshift TM?

All my tuner has done so far, is to change the WOT sparK advance in different areas and adjust the cooling fan. The A/F seemed right on the dyno, so it remained unchanged.

I don't want to affect my normal driving adversely, as WOT is such a very small percentage. BUT! Am I leaving a lot on the table???

 

Yes. Each of the 4 TM settings listed above has its own master TM switch.

Maybe my SOTP meter is off, but I felt NO change with maxed out TM cells on every chart. But a HUGE change when I flipped the masters off. There's something missing to get in-between results. It could just be my limited experience and I'm ok with that as long as I keep learning (and not the hard way).

 

Here is what the stock "Trans - TM" table looks like:



The 4 'switches' are to the right. I am also running only the TM on Upshift disabled.

 

I had my '08 done about 2 weeks ago. Yes! You can tune it out or set it where you want. My shifts as close to a sequential F-1 type trans as you can get with a torque converter. It's excellent. I didn't notice any torque management out of the gate either. Call Charlie at RPM Motors, a sponsor. He can actually tell you what he did to it. We did a lot of trial and error in the car. I'm sure that you could find someone on the east coast to do the same.

 

Wow! Thanks. I'm guessing my tuner never went there because I told him I didn't want a real aggressive tune.

 

I can confirm disabling TM "Upshifts" In HP Tuner V2.2 does indeed work and saved me about .15 time in the 1/4 mile.

However, whatever anyone may claim, there is NO, I repeat NO tuning solution yet out or Pro Tuner that removes the Launch TM. To say otherwise is This can be confirmed by Cartek, tuner for the fastest bolt-on member, Dennis50NJ. For now, you have to drive around it.

 

how to you get it to bring up that stuff in torque managment.
mine only says normal performance and downshift