My tuner is telling me:

TQ managment in the Vette controls power output till the point of spinning the tires. So with this, sometimes you dont want it to kick in as fast due to alittle more agressive power you have added. So what I do is give it alittle more room so you wont feel like the computer is holding back your new found power. The saftey is still 100% there, just now you can get alittle more agressive with the driving of it before it holds you back from breaking the tires loose.

I'm having a little bit of trouble believing the TQ system brakes BEFORE the tires even get loose?

While we are on the subject... my thoughts are A/H is mostly to control yawl & wheel spin when drifting in a turn. I question if it ever even kicks in as long as the car is pointed and moving straight ahead.

Ideas?


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It lets the tires spin a bit before kicking in. My guess is he wants to let them spin a little more before it activates.

 

TC and AH have nothing to do with Torque Management which is in place to protect the driveline. Torque Management has nothing to do with the tires spinning. The PCM doesn't monitor the wheel speeds so it has no idea if the tires are spinning.

Your tuner cannot do anything with Traction Control, Active Handling or ABS because he cannot get to the EBCM to reprogram it.

The Traction Control system monitors wheel speeds and senses minute differences in the speeds. If one of the rear wheels goes into a bump and slightly changes speeds the Traction Control system on early cars will apply the brake to that wheel and cut engine power. That is the famous I drove out of the parking lot at low speed and just as I got into traffic the car died. This happens because the rear wheels are going across the a bump in the entrance at slightly different times and one has an instantaneous wheel speed that gets pretty high and the system reacts. In straight line conditions where a lot of power is applied to both rear wheels and they both start to slip the TC system will either apply the brakes or cut power or do both. Brakes are the main method used in low speed situations and throttle control is used at higher speeds since it reacts quicker.

AH usually is not active during straight line manuevers but it can do things when it senses you are pointing the car in a different direction than what the sensors are telling it the car is doing. It will then interfere by applying one of the 4 brakes to control what to you would be a non event. I have experienced this during autocrosses where I have gone around a sharp turn with Comp Mode on and then floored the throttle as I left the turn. The rear tires start to spin with the backend just starting to wander a little and the AH will alternately apply one of the front brakes to keep the car going in a straight line Vs whipping back and forth.

Bill

Here is the description of Torque Management:
Torque Management is a function of the PCM that reduces engine power under certain conditions. Torque Management is performed for the following reasons:

To prevent overstress of the powertrain components
To reduce engine power during certain throttle actuator control (TAC) system faults
To limit the engine power when the brakes are applied more than approximately 40 percent
To prevent damage to the vehicle during certain abusive maneuvers
The PCM monitors the following sensors and engine parameters to calculate engine output torque:

Air/Fuel ratio
Mass Air Flow (MAF)
Manifold Absolute Pressure (MAP)
Intake Air Temperature (IAT)
Spark Advance
Engine Speed
Engine Coolant Temperature (ECT)
A/C Clutch Status
The PCM monitors the torque converter status, the transmission gear ratio, and the extended brake switch input in order to determine if torque reduction is required. The PCM retards the spark as appropriate to reduce engine torque output if torque reduction is required. The PCM also shuts off the fuel to certain injectors to reduce the engine power in the case of an abusive maneuver.

The following are instances when engine power reduction is likely to be experienced:

During transmission upshifts and downshifts
Heavy acceleration from a standing start
The brakes are applied with moderate to heavy throttle (with the traction system active).
When the driver is performing harsh or abusive maneuvers, such as shifting into gear at high throttle angles or shifting the transmission from reverse to drive to create a rocking motion.
The driver is unlikely to notice the torque management actions in the first two instances. The engine power output will be moderate at full throttle in the other two cases.

The PCM calculates the amount of spark retard necessary to reduce the engine power by the desired amount. The PCM disables the fuel injectors for cylinders 1, 4, 6, and 7 in the case of an abusive maneuver.

 

Wow, heavy weight response. Really great and makes a lot of sense. Thanks for taking the time to post all this!

 

I just turn it all off. Ive been racing/driving for 35 years and dont need a computer to help me go around turns. I toss the car how I need to and come out of turns hard when the computer would foul all that up bigtime. First thing I do after starting the car is hit the button quickly..ALL OFF

 

Sounds like Torque Management is only on Auto4 Vettes..... Am I to assume 01-04 Z06 does not have Torque Mngt??

 

i have no proof . i think tm is not always felt but applied not to brakes but timing ,fuel . active handling will get youre attention if ya rolling at 50 or so and hit a puddle on one side. on the street leave ah on i call it save youre *** software. with it off when the car starts to slid at speed it will probly keep on going unless youre a a very good driver