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Torque Management

This is a discussion on Torque Management within the Automatic Transmission forums, part of the Drivetrain category; I am planning on getting my car tuned soon (a4) and was curious what deleting the torque management would do? ...

  1. #1
    I lika da Chevy's LETHALxLS1's Avatar
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    Torque Management

    I am planning on getting my car tuned soon (a4) and was curious what deleting the torque management would do? Would that be a smart thing to do on a daily driver? I was also wondering about changing the speed at which the car shifts to OD. What do you consider a good speed for a car to shift to OD? Thanks

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    Just me Y2KPewterSS's Avatar
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    In my experiences, I wouldn't turn the torque management off, unless you have a built 4l60E or are planning to have it built. Having it turned off will lower your ETs, but it also reduces the life span of the 4l60E drastically.
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    ArtistFormerlyKnownAsMac Silver Streak's Avatar
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    Mine was turned off during my tune.... Been running great for the last year+.. and I beat the hell out of my car!!!!
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    I lika da Chevy's LETHALxLS1's Avatar
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    If it reduces trans life I wont disable it. Kitt what doess it do? Can a difference be felt??

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    ArtistFormerlyKnownAsMac Silver Streak's Avatar
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    MUCH easier to break the wheels loose... lots more fun.

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    Turned off TM in my car years ago - no problems yet. TM only comes into play during what GM calls "abusive maneuvers" - like nailing it from a stop. Mine's a daily driver and the stock TC lockup (if that's what you mean by OD shift speed) is fine for me - at part throttle about 42-45. I don't beat on the car though, just a couple times/year at the track. Leave it enabled to be safe.

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    I lika da Chevy's LETHALxLS1's Avatar
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    well I mean I can be cruising at pretty low speeds and my car will go into OD and the car is sluggish at such low speed in such a high gear. I thought maybe while I was getting a tune I could get them to make the transmission not go into overdrive until maybe 55mph or so? I mean I realize the same thing can be acheived by running the car in D or 3rd then shifting to (D) but I dont like to do that.

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    Senior Member slims00ls1z28's Avatar
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    All the torque management does is retard the timing a little during the shift to make the hit a little softer on the trans. If you think ours are bad try driving a late model auto mustang. You can really feel it pull the timing out on them.

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    I pulled mine out about 6 months ago and Ive been giving it hell and havent had any problems yet

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    I can't remember where I got the following description but I thought it was from a GM source. My apology to who ever authored it for not having the source:


    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 overstressing the powertrain components.
    To prevent damage to the vehicle during certain abusive maneuvers.
    To reduce engine speed when the IAC is out of the normal operating
    range.

    The PCM monitors the following sensors and engine parameters to
    calculate engine output torque:
    Air/Fuel ratio
    Mass Air Flow
    Manifold Asolute Pressure
    Intake Air Temperature
    Spark Advance
    Engine Speed
    Engine Coolant Temperature
    A/C Clutch Status

    The PCM monitors the torque converter status, the transmission gear
    ratio, and the engine speed in order to determine if torque reduction
    is required. The PCM retards the spark as appropriate to reduce
    engine torque 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 manuever.

    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 IAC is out of the normal operating range.
    When the driver is performing harsh or abusive manuevers 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
    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
    manuever.

  11. #11
    I lika da Chevy's LETHALxLS1's Avatar
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    Thanks for the info. I am going to ask my tranny man who just rebuilt my tranny about it. I have a 3 year warr. on my tanny and if it wont affect that I am disabling the torque management.

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    That's the description of TM in my helms.

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    well if it just reduces power, do it and drive it safer. when goin from R to D, make a full stop, etc.

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    Yeah I remember one time in my 84 H.O. z28 I didnt come to a complete stop when shifting from reverse to drive (it was a automatic) it messed up the linkage to the carburator and my car wouldnt shift out right. Easy fix on that car though. I baby the z28 I have now. I havent even done a burnout in it. I do get on the gas a little occassionally but thats about it.

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    getting rid of TM makes a auto a different beast

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    maybe thats one other reason ppl think manuals are better than autos.

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    Hey break neck speed, If I were you I would just get the TM deleted out. Don't run it buy your tranny man, he will tell you it will void the warranty. If you ever have any tranny problems, they will never know the TM has been removed. At least I wouldn't think they would, I may be wrong though.

  18. #18
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    I dunno man my tranny man is a drag racer himself and told me to abuse the transmission and have fun!! LOL He also does head,cam, and total rebuilds on lsx motors.
    He will build em any way you want. He said if your not abusing the transmission you arent having fun! hahahaha Really good guy who knows how it is.

  19. #19
    Retired NOT tired SteveC's Avatar
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    After having my Y3000, transgo shift kit, billet 2-4 servo, and 3.73's installed, the tuner either deleted or nullified the TM system in my 01 Z28.

    With these modifications it changed all the dynamics of the vehicle.

    SteveC

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