[caseyp]

Originally Posted by JSH

Yes, a thread here covers this. He's editing the TUTD tables in his TCM (auto trans years 2017-2019, not 2020 or 21) to specify the MPH or RPM for all gears changes. This allows him to burnout, launch and make the whole run in Manual mode, and eliminate rev limiter hits.

He no longer has to launch in manual then push the shift lever to auto to complete the run.

There is something more than just the TUTD he is doing to accomplish the !st gear full throttle launch on run flats from a traction stand point, not refer to the shifting or gear selection on this comment. Sorry for the confusion.

[caseyp]

I was willing to pay CSP to remote tune mine for this traction management thing he referenced, but they told me they don't do remote tunes and only do it on car they tune in person. Bummer Im in Montana and a long ways away. So I guess that leaves it up to me to try and figure out myself. Hopefully with the help of this forum, maybe we can figure it out. It would be a game changer for me. I wonder if its a combination of limiting throttle blade, timing in !st gear only, plus torque management settings. Can the traction control function itself be modified in the tune or is that in the BCM..... I know he leaves traction control on, but not sure in what mode or setting.

[JSH]

Originally Posted by grampa_ss

That's not what were referring to here. The TUTD settings are easy. Were talking about full throttle in 1st gear from a dig with run flats. That's what we want to know. If you watch his video, he tells you how to do the 2nd gear launch, but he also said he's NOT got to give away the secret on how to launch WOT on run flats.

Can we design a spark advance curve for 1st gear or any gear?

[KingLT1]

No you can't by gear but you can pull timing in the low to midrange part of the timing map which will make it launch easier and not hit as hard from a low roll.

[JSH]

Originally Posted by KingLT1

No you can't by gear but you can pull timing in the low to midrange part of the timing map which will make it launch easier and not hit as hard from a low roll.

Yea, that should work. You just have to take some of the power/torque away in at least 1st and 2nd gears where a sizeable percentage is unusable.

[JFWJR179]

Originally Posted by JSH

I just found that my '20 ZL1 has the T93 TCM, which HPT does not support. Wish I had known this before I bought this car.

The encrypted T93 TCM is the reason why I scrapped my plan to
buy a 2020 or newer ZL1.
The T93 will never be unlocked/broken by any aftermarket shop and
engine mods without the ability to tune the A10 Transmission will prevent
getting the power to the ground no matter what the Tuning shop says.

[zincgt]

There is a parameter in the TCM that allows you to control torque by gear. Not that hard to find. You can also lower your peak torque in the ecm and it will have the same effect.

[JSH]

In the T93 TCM? If yes, this is great news since really all we're talking about here is limiting torque for the first second or two after launch

Originally Posted by zincgt

There is a parameter in the TCM that allows you to control torque by gear. Not that hard to find. You can also lower your peak torque in the ecm and it will have the same effect.

[caseyp]

Can you control throttle blade position by gear? Or even by RPM in each gear? Maybe limit throttle opening to 50% the first half of 1st gear then slowly open to 100% by the time it shifts to 2nd, then 100% rest of the run?

[Z OH 6]

Originally Posted by JFWJR179

The encrypted T93 TCM is the reason why I scrapped my plan to
buy a 2020 or newer ZL1.
The T93 will never be unlocked/broken by any aftermarket shop and
engine mods without the ability to tune the A10 Transmission will prevent
getting the power to the ground no matter what the Tuning shop says.

You're wrong on both accounts but keep believing that BS.

[supersportss]

There is a aftermarket torque converter on the horizon for the A 10 that will help launch like a MOFO.

[JSH]

Tell us more. Who's converter is it?

Originally Posted by supersportss

There is a aftermarket torque converter on the horizon for the A 10 that will help launch like a MOFO.

[supersportss]

After testing is complete the cat will be out of the bag.

[JFWJR179]

Originally Posted by Z OH 6

You're wrong on both accounts but keep believing that BS.

I will stand corrected on both counts if you will please tell us the name of the shop that has:
1. Unlocked/broken the encrypted T93 TCM on the 2020 + ZL1
2. Tuned the A10 transmission for 2nd gear start, shift points and torque mgt.
like Andrew at CSP did on his 2018 ZL1.