A10 87A TCM 1st gear delete in Auto - Page 2

JSH · 08-07-2023, 05:32 PM

Quote:

Originally Posted by grampa_ss

Attachment 1133218
These should be the tables you need to edit. I downloaded a stock 2017 Zl1 file from hptuners. the tables look like the A8...so, in theory these tables should be the ones you need to modify. I can tell these are way way too high a mph to shift at 6500. You'll hit the limiter with these stock settings.

So it seems to me the speed has to be adjusted below the desired RPM, which has to be the controlling criteria.

grampa_ss · 08-08-2023, 08:17 AM

Exactly. If you want the 2-3 to shift at say 6700 rpms and 6700 rpms is 65 mph. I'd set the shift mph at 61 mph and test it. See where that puts you. These are A8 settings, your A10 2-3 will be lower.

JSH · 08-09-2023, 12:25 PM

Quote:

Originally Posted by grampa_ss

Exactly. If you want the 2-3 to shift at say 6700 rpms and 6700 rpms is 65 mph. I'd set the shift mph at 61 mph and test it. See where that puts you. These are A8 settings, your A10 2-3 will be lower.

KingLT1 saw this thread and has solved my problem. Mph is the controlling criterion.

grampa_ss · 08-09-2023, 05:29 PM

You're in good hands.

*radz28* · 08-11-2023, 09:27 AM

Did you ever get the 2nd Gear start figured out?

I checked, again, yesterday, but - at least with a T87A conversion, it is not possible to shift into 2nd Gear when the car is stopped. I have to roll to a stop, already in TUTD 2nd-Gear, in order to force a start in 2nd-Gear... This is still on the T87A converstion - I am not on a tuned T93.

JSH · 08-11-2023, 10:45 AM

Quote:

Originally Posted by radz28

Did you ever get the 2nd Gear start figured out?

I checked, again, yesterday, but - at least with a T87A conversion, it is not possible to shift into 2nd Gear when the car is stopped. I have to roll to a stop, already in TUTD 2nd-Gear, in order to force a start in 2nd-Gear... This is still on the T87A converstion - I am not on a tuned T93.

Mine is a T87a. When I'm in TUTD (manual mode) and roll to a stop, it downshifts to 2nd and stops there. In Auto, it rolls to a stop in 1st. I now hear that this TCM can also be tuned to roll to a stop in 2nd and remain in Auto. I'm really not sure which is better for the strip. I have no problem racing like it is today, TUTD 2nd gear launch/auto shifts, or TUTD 2nd gear launch/manual shifts.

*radz28* · 08-11-2023, 11:34 AM

Quote:

Originally Posted by JSH

Mine is a T87a. When I'm in TUTD (manual mode) and roll to a stop, it downshifts to 2nd and stops there. In Auto, it rolls to a stop in 1st. I now hear that this TCM can also be tuned to roll to a stop in 2nd and remain in Auto. I'm really not sure which is better for the strip. I have no problem racing like it is today, TUTD 2nd gear launch/auto shifts, or TUTD 2nd gear launch/manual shifts.

I'm sorry. I meant to ask if you're able to SHIFT TO 2ND FROM A STOP, from 1st. Or - do you still HAVE to roll to a stop in 2nd.

Sorry about my confusing wording...

JSH · 08-11-2023, 05:35 PM

Quote:

Originally Posted by radz28

I'm sorry. I meant to ask if you're able to SHIFT TO 2ND FROM A STOP, from 1st. Or - do you still HAVE to roll to a stop in 2nd.

Sorry about my confusing wording...

1st gear is deleted, so it moves forward in second gear from stop.

KingLT1 · 08-11-2023, 09:33 PM

Quote:

Originally Posted by radz28

I'm sorry. I meant to ask if you're able to SHIFT TO 2ND FROM A STOP, from 1st. Or - do you still HAVE to roll to a stop in 2nd.

Sorry about my confusing wording...

The transmission never downshifts to 1st.... It stays in 2nd gear.

grampa_ss · 08-12-2023, 10:29 AM

Quote:

Originally Posted by KingLT1

The transmission never downshifts to 1st.... It stays in 2nd gear.

How do you do this for the A8? Is it setting the 2-1 downshift mph to zero?
I’ve played with the trans settings for years and somehow never even tried to mess with that, even though 1-2 sucks.

*radz28* · 08-12-2023, 11:28 AM

Quote:

Originally Posted by KingLT1

The transmission never downshifts to 1st.... It stays in 2nd gear.

Yes. But I THOUGT (I could likely be misunderstanding) people are reporting they can shift INTO 2nd from a stop. Can you do that, or is everyone saying they have to roll to a stop, in 2nd already, then they can make the run from 2nd?… Maybe I’m just not saying it right…

jlaudio11 · 08-12-2023, 11:35 AM

Quote:

Originally Posted by radz28

Yes. But I THOUGT (I could likely be misunderstanding) people are reporting they can shift INTO 2nd from a stop. Can you do that, or is everyone saying they have to roll to a stop, in 2nd already, then they can make the run from 2nd?… Maybe I’m just not saying it right…

From my understanding A8 cars can be at a stop, go to manual mode and shift up into 2nd. I havent seen this possible on the a10 cars though. Definitely a software thing as the tuning tables we can see are fairly similar between the two. My 10r80 in my F150 can shift up to 2nd in manual at a dead stop.

Joshinator99 · 08-12-2023, 01:13 PM

Quote:

Originally Posted by jlaudio11

From my understanding A8 cars can be at a stop, go to manual mode and shift up into 2nd. I havent seen this possible on the a10 cars though. Definitely a software thing as the tuning tables we can see are fairly similar between the two. My 10r80 in my F150 can shift up to 2nd in manual at a dead stop.

Yep, you can definitely do that with the A8.

arpad_m · 08-12-2023, 02:20 PM

Same here, and I don't think it's in the tune, I didn't see any TCM change that appears be related. At the drag strip I switch to competitive mode, do a burnout in manual trans mode, then once stopped, I shift to 2nd, launch and slap the stick over to auto.

08-08-2023, 08:17 AM	#16
grampa_ss Drives: 2016 Camaro 2SS Join Date: Apr 2017 Location: Stansbury Park, Utah Posts: 1,092	Exactly. If you want the 2-3 to shift at say 6700 rpms and 6700 rpms is 65 mph. I'd set the shift mph at 61 mph and test it. See where that puts you. These are A8 settings, your A10 2-3 will be lower. __________________ 2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000 New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth.

08-09-2023, 05:29 PM	#18
grampa_ss Drives: 2016 Camaro 2SS Join Date: Apr 2017 Location: Stansbury Park, Utah Posts: 1,092	You're in good hands. __________________ 2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000 New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth.

08-11-2023, 09:27 AM	#19
radz28 Petro-sexual Drives: Ultra-Grin Join Date: Oct 2006 Location: Crazy Coast Posts: 15,201 View My Garage	Did you ever get the 2nd Gear start figured out? I checked, again, yesterday, but - at least with a T87A conversion, it is not possible to shift into 2nd Gear when the car is stopped. I have to roll to a stop, already in TUTD 2nd-Gear, in order to force a start in 2nd-Gear... This is still on the T87A converstion - I am not on a tuned T93. __________________ '20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs

08-12-2023, 02:20 PM	#28
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,619 View My Garage	Same here, and I don't think it's in the tune, I didn't see any TCM change that appears be related. At the drag strip I switch to competitive mode, do a burnout in manual trans mode, then once stopped, I shift to 2nd, launch and slap the stick over to auto. __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

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