Transmission Torque Management

[ddaugherty91]

Hello everyone. I'm new to the tuning world and just received my HP Tuners in the mail yesterday and got it registered and all the software installed. Ive done a lot of looking around and research on tuning. Oh and btw i have a 03 silverado 5.3. its completely stock except for an intake. What i want to know is how do i go about disabling torque management on both the engine side and transmission side the right way? And also are there any tweaks or settings anyone suggest i should make for better power? thanks in advance!!

[almarconi]

If the transmission is stock, I would leave torque management alone. Why get rid of it on a stock transmission?

[ddaugherty91]

i want some firmer and faster shifts and i'd like to get rid of the sluggishness off the line. i've read where a lot of guys have done it on a stock tranny but they never really say exactly how to do it.

[almarconi]

Add a shift kit and a corvette servo. Eliminating TQ management will not firm up your shifts.

[edcmat-l1]

Add a shift kit and a corvette servo. Eliminating TQ management will not firm up your shifts.

Tuning the transmission can make it shift as if it has a shift kit.

[almarconi]

Tuning the transmission can make it shift as if it has a shift kit.

I agree to some extent, by altering the force motor tables or shift pressures, but the proper way to do it is mechanically with a shift kit. A stock trans can only be pushed so far before stuff starts to break.

[Russ K]

Tuning the transmission can make it shift as if it has a shift kit.

The trucks need the Corvette servo, no tuning will fix the WOT 1-2 slip grab shift without it.

Russ Kemp

[edcmat-l1]

I agree to some extent, by altering the force motor tables or shift pressures, but the proper way to do it is mechanically with a shift kit. A stock trans can only be pushed so far before stuff starts to break.

How is a shift kit and servo going to make the trans any stronger? In other words, how is installing them going to make the trans any less likely to break versus tuning it?

The trucks need the Corvette servo, no tuning will fix the WOT 1-2 slip grab shift without it.

Russ Kemp

Good to know.......

[almarconi]

How is a shift kit and servo going to make the trans any stronger? In other words, how is installing them going to make the trans any less likely to break versus tuning it?

I really don't know what else to say. The 4L60e, in a truck especially, has many durability issues that need to be addressed. Valve body, 2nd gear servo, pump, sunshell, 3-4 clutch pack,planetaries are all areas that should be looked at when doing a rebuild. The OP wanted to remove TQ management on both engine/trans side to firm up the shifts. I prefer to change the shift pressures manually with a shift kit, if you think that changing them through tuning alone is better then go for it. I don't think the OP is going to get the results he wants from tuning alone, as RussK pointed out, some parts are going to have to be changed.

[edcmat-l1]

Add a shift kit and a corvette servo. Eliminating TQ management will not firm up your shifts.

I agree to some extent, by altering the force motor tables or shift pressures, but the proper way to do it is mechanically with a shift kit. A stock trans can only be pushed so far before stuff starts to break.

How is a shift kit and servo going to make the trans any stronger? In other words, how is installing them going to make the trans any less likely to break versus tuning it?

I really don't know what else to say. The 4L60e, in a truck especially, has many durability issues that need to be addressed. Valve body, 2nd gear servo, pump, sunshell, 3-4 clutch pack,planetaries are all areas that should be looked at when doing a rebuild. The OP wanted to remove TQ management on both engine/trans side to firm up the shifts. I prefer to change the shift pressures manually with a shift kit, if you think that changing them through tuning alone is better then go for it. I don't think the OP is going to get the results he wants from tuning alone, as RussK pointed out, some parts are going to have to be changed.

If you look at the posts in order, it looks like you're saying that somehow a shift kit is going to make it stronger or the fact that you're installing a shift kit versus tuning somehow is better for the trans? I'm not arguing the strength (or lack of) of the 60s, I know their faults. But using a shift kit to achieve shift firmness is not any better for the trans than tuning it to shift firm.

Also, I'm not arguing that reducing or eliminating TM will achieve what he wants.

As for the trucks and the WOT 1-2 shift, that's another story.

[jimmyblue]

If you fix the shift speed (eliminate learning, up the shift
pressures) you probably won't notice the TM. You can reduce
the TM spark-pull without eliminating it entirely, which is
what I prefer. There is no good that will come of applying
full abuse to this transmission.

[01ssreda4]

Jimmy, you do realize your spouting off what he should do and he got the software yesterday which makes your post 100% useless to him.

[sarg]

I did notice a HUGE difference when I eliminated all TM on the trans side of a 2007 Trailblazer SS for a friend. The down side was that it threw it into some kind of a weird limp mode 1x per drive cycle. After you came to a complete stop it would not do it ever again until you turned it off and back on. Never a code or anything...just weirdness. So we ended up having to put some torque management back on it and away the problem went....but away the nice crisp shifts went as well.

[robbyredneck]

wow you got some pretty big guns too chime in on only your 4th post. with trucks i would suggest looking at your burst knock, timing , shift speed and upshift/downshift tables it makes your truck "feel" way more responsive. if it makes you feel better only take 50% of your torque management out.

[sarg]

Shoot I have taken over 75% of the TM out of that trailblazer SS and it still does not even feel like what it did with everything removed. I just wish we could figure out why removing all of it throws it into some kind of limp mode once per trip!

[snowvette]

I'm running no tm with no issues.

[sarg]

no weird issues with the throttle?

[snowvette]

The only table you can not zero out is the reduction duration. I have .2 across the board in that table and no issues.
If you zero out that table, you'll have problems.

[Gh0st]

Can someone elaborate on a 4L60E "learning"? I never knew they had a learning capability. Learning what exactly?

[jimmyblue]

There is shift-time learning, goal is set by desired shift
time table and the shift pressure is varied to meet it.
This can result in more, or less line than you think and
will make applied pressure vary with weather and so on.
Most people zero the times and get what they want with
the pressure & adder tables.

There is TCC slip learning, which will bump the TCC PWM
value up if slip exceeds a limit value, or down if it doesn't
slip at all. Again there's not much good that comes of this
(just shaving off some pump load to chase MPG, and get
TCC apply to feel like Grandma's Buick). For any performance
converter you're best off putting min TCC duty to 98% and
max to 99%.