[radz28]

I'm probably misunderstanding, but HHP clearly states the TCMs don't come ready-to-run out of the box without confirmation of some basic stuff. Did you follow the directions, verify the tune file you were starting with was appropriate, and then made whatever corrections to the stock file you wanted? These TCMs don't come "tuned" to my understanding. You have to calibrate some engine parameters along with the TCM.

[Camaro1973]

Originally Posted by JSH

Wait -

If you pull the shifter to the left into manual mode, it will not upshift ever but it will down shift.

If you leave the shifter in Auto and use the paddle to downshift and go WOT, it will shift at redline and will be in performance shifting mode until you turn the engine off or go to manual.

If you leave the shifter in Auto and use the paddle to downshift and cruise along at say 50, it will shift to the next gear when it defaults back to auto in 10 sec or so.

There's too many combos.

This has nothing to do with what hes talking about.

[Camaro1973]

Originally Posted by 18SS1LE

what has been changed in the modified A10 file compared to stock besides shifting points in Auto mode?

In manual mode, my ZLE sometimes shifts gracefully into the next gear, and sometimes pauses for a split second and bangs into the next gear (specifically shifting from 2nd to 3rd).

Im wondering if tuning can be done on the A10 to make it shift the way it does from 2nd to 3rd every damn time, consistently.

Shift points, Torque Limits, Torque Settings, Line Pressures etc.

[Vigilante375]

Originally Posted by 18SS1LE

what has been changed in the modified A10 file compared to stock besides shifting points in Auto mode?

In manual mode, my ZLE sometimes shifts gracefully into the next gear, and sometimes pauses for a split second and bangs into the next gear (specifically shifting from 2nd to 3rd).

Im wondering if tuning can be done on the A10 to make it shift the way it does from 2nd to 3rd every damn time, consistently.

People who have tuned their TCMs have sworn up and down about how much better the car shifts.

It's probably worth the few hundred dollars if you have a 2017-2018 car. IMO, I don't think it's worth it for the 2019+ cars because you'll be spending over $1500 in the end. Buying the TCM then having a tuner, tune the TCM for you.

But to each their own. Just like how you like the 2nd to 3rd shift....thats not how how the A10 was meant to shift.

[18SS1LE]

Originally Posted by Camaro1973

Shift points, Torque Limits, Torque Settings, Line Pressures etc.

Originally Posted by Camaro1973

This has nothing to do with what hes talking about.

thank you

[18SS1LE]

Originally Posted by Vigilante375

People who have tuned their TCMs have sworn up and down about how much better the car shifts.

It's probably worth the few hundred dollars if you have a 2017-2018 car. IMO, I don't think it's worth it for the 2019+ cars because you'll be spending over $1500 in the end. Buying the TCM then having a tuner, tune the TCM for you.

But to each their own. Just like how you like the 2nd to 3rd shift....thats not how how the A10 was meant to shift.

In the end of the day, if I can get my car to shift the way I want it to, it’s money well spent.

[Camaro1973]

Originally Posted by Vigilante375

People who have tuned their TCMs have sworn up and down about how much better the car shifts.

It's probably worth the few hundred dollars if you have a 2017-2018 car. IMO, I don't think it's worth it for the 2019+ cars because you'll be spending over $1500 in the end. Buying the TCM then having a tuner, tune the TCM for you.

But to each their own. Just like how you like the 2nd to 3rd shift....thats not how how the A10 was meant to shift.

2019 has the t87a also.

[JSH]

Of course it does:

The OP said: "In manual mode, my ZLE sometimes shifts gracefully into the next gear ... "

He's referring to the shifting in his current car. But it won't upshift in manual mode.

Originally Posted by Camaro1973

This has nothing to do with what hes talking about.

[radz28]

The solution for what it sounds like you're looking for is probably getting a TCM. This will optimize your combination, and likely be worth a few tenths in the 1320 under good track prep and good tires. I would be careful, if you care about corners, that you don't shoot for that kind of shift if you're tracking your car. Shifts that abrupt might upset the car, mid-corner/exit/etc. You know what you want, so you probably already understand that, so IMO, a TCM-tune is the way to go to have it how you want it.

There's balancing from the ECM to the TCM though, from what I'm seeing. HHP charges about $500 to do both from my last contact. But - they also said they're pretty busy at the moment, so they're not taking too much of that kind of work in. I know of other shops charging as much as $1200 for remote tuning. If you do it yourself, and don't already have HPTuners, you'll be looking at about the same to be able to do some tuning, and even get some HPTuners-remote-tuning-guys from that forum to tune your car for you.

I've been told about half the shift improvements for the transmission are on the engine side. From what I can see, I believe those people and their statements. My point is, you'll still have some optimization in the TCM though.

[JSH]

Yep. Every tuner I've contacted said he would have to tune both the ECM and TCM together. My GTR TCMs were also tuned with the ECM.

Originally Posted by radz28

I've been told about half the shift improvements for the transmission are on the engine side. From what I can see, I believe those people and their statements. My point is, you'll still have some optimization in the TCM though.

[KingLT1]

Originally Posted by 18SS1LE

what has been changed in the modified A10 file compared to stock besides shifting points in Auto mode?

In manual mode, my ZLE sometimes shifts gracefully into the next gear, and sometimes pauses for a split second and bangs into the next gear (specifically shifting from 2nd to 3rd).

Im wondering if tuning can be done on the A10 to make it shift the way it does from 2nd to 3rd every damn time, consistently.

I wouldn't want the trans to shift like the 2-3 does stock ever. That is torque management cutting spark and closing throttle on that shift creating a big delay which negates a lot of the potential of having the extra gears. I would want the A10 to shift like the 4-5 on every shift and that can be achieved with tuning.

Originally Posted by Vigilante375

People who have tuned their TCMs have sworn up and down about how much better the car shifts.

It's probably worth the few hundred dollars if you have a 2017-2018 car. IMO, I don't think it's worth it for the 2019+ cars because you'll be spending over $1500 in the end. Buying the TCM then having a tuner, tune the TCM for you.

But to each their own. Just like how you like the 2nd to 3rd shift....thats not how how the A10 was meant to shift.

I just tuned my brothers ECM on his 2019 A10 ZL1 for flex fuel, ported tb, and cai... It shifts better with a few tweaks I applied. On a lightly modified ZL1 you can get by with just this if you don't care about the throttle not opening all the way in first gear which potentially limits 60ft times. even on the 2019 the cost is 4 credits + the unlock fee. So 450.00+ and my time to tune it...which isn't to terrible, but yea the 2020+ stuff that requires the HHP TCM is spendy for sure.

[Camaro1973]

Originally Posted by JSH

Of course it does:

The OP said: "In manual mode, my ZLE sometimes shifts gracefully into the next gear ... "

He's referring to the shifting in his current car. But it won't upshift in manual mode.

JSH what in the lords name are you talking about. He’s clearly saying it shifts differently sometimes in manual mode (using paddles). ESP From shifts 2-3, he likes the way it shifts and wants all to shift like that.

[JSH]

For me, correcting these and other issues and significantly improving the 60 ft. is worth a few grand. Gotta make it 60 ft. like GM wasn't involved with it.

Originally Posted by KingLT1

I wouldn't want the trans to shift like the 2-3 does stock ever. That is torque management cutting spark and closing throttle on that shift creating a big delay which negates a lot of the potential of having the extra gears. I would want the A10 to shift like the 4-5 on every shift and that can be achieved with tuning.

I just tuned my brothers ECM on his 2019 A10 ZL1 for flex fuel, ported tb, and cai... It shifts better with a few tweaks I applied. On a lightly modified ZL1 you can get by with just this if you don't care about the throttle not opening all the way in first gear which potentially limits 60ft times. even on the 2019 the cost is 4 credits + the unlock fee. So 450.00+ and my time to tune it...which isn't to terrible, but yea the 2020+ stuff that requires the HHP TCM is spendy for sure.

[JSH]

You're not the first to wonder what I'm talking about...

Originally Posted by Camaro1973

JSH what in the lords name are you talking about. He’s clearly saying it shifts differently sometimes in manual mode (using paddles). ESP From shifts 2-3, he likes the way it shifts and wants all to shift like that.