C8 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by: CARiD

TCM Tuning

Thread Tools
 
Search this Thread
 
Old Oct 30, 2023 | 01:07 PM
  #21  
ArizonaZ06's Avatar
ArizonaZ06
Melting Slicks
25 Year Member
Active Streak: 90 Days
Photoriffic
Top Answer: 5
 
Joined: Aug 2000
Posts: 2,390
Likes: 1,166
From: Early 2020 Z51 Coupe, Original Owner, Ahwatukee Foothills, AZ
Default

Bring on the SEMA show and let's see what HP Tuners new software's all about.
Reply
Old Oct 31, 2023 | 12:14 AM
  #22  
NoMatter's Avatar
NoMatter
What’s Next
Supporting Lifetime
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Dec 2020
Posts: 1,293
Likes: 834
From: Reality
Default

I'd like to tune the TCM/ ECU for a lighter flywheel. Shouldn't be an issue when the AFM is deleted. I know how it may feel in stop and go traffic/ parking lots ( which I hardly see), at least that's how my GTR was with one. At the same time it should be a little less tamed being a V8 which has more rotational mass to aid in balancing.
Reply
Old Oct 31, 2023 | 11:55 AM
  #23  
OkieVette84's Avatar
OkieVette84
Racer
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Apr 2020
Posts: 406
Likes: 303
From: Oklahoma
Default

No announcement seen yet...
Reply
Old Oct 31, 2023 | 02:23 PM
  #24  
Andybump's Avatar
Andybump
Race Director
15 Year Member
Community Influencer
Community Favorite
Top Answer: 5
 
Joined: Mar 2007
Posts: 11,249
Likes: 8,384
Default

I don't know much about tuning for higher performance. But what features of the Transmission Control Module (TCM) would be tuned? Shift points? Which implies reliance on the Automatic Shift Mode. Anything else? Clutch control? I saw someone mention launch control RPM. Is that controlled by the TCM or the ECM?
Reply
Old Oct 31, 2023 | 02:33 PM
  #25  
INTRUDR's Avatar
INTRUDR
Burning Brakes
Supporting Lifetime Gold
Veteran: Navy
20 Year Member
Liked
Community Favorite
 
Joined: Aug 2004
Posts: 847
Likes: 729
From: Houston, TX
Default

Originally Posted by OkieVette84
No announcement seen yet...
I recently received an email from HP Tuners with their announcement (It is NOT about the C8 TCM), but some of the LS folks might be excited:




https://www.hptuners.com/core-ecu/?utm_source=Klaviyo&utm_medium=email&utm _campaign=CORE%20ECU%20and%20VCM%20Live% 20Public%20Announcement%20%282023-10-
31%29&_kx=CIBnGIqQ-xjPv4Op1WS_P86MlZHb25CTmXnsX_sdzV0%3D.TB ic7m

Reply
Old Nov 1, 2023 | 11:13 AM
  #26  
degfu's Avatar
degfu
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Liked
Loved
 
Joined: Aug 2022
Posts: 205
Likes: 103
Default

Originally Posted by INTRUDR
Pretty disappointing announcement. I think there are plenty of other solutions available for LS Swaps.
Reply
Old Nov 1, 2023 | 11:23 AM
  #27  
ChrisNC's Avatar
ChrisNC
Instructor
All Eyes On Me
Liked
Loved
 
Joined: Mar 2018
Posts: 107
Likes: 34
Default

I just wished we could get some information about what is taking time to process for being able to tune the TCM in relation to the ECU. I haven't exactly read over the information but my understanding is they did a hardware crack on the ecu for being able to tune it. That might be entirely wrong but if that is the case I was curious why the TCM can't be done the same way or where they are in the process with it. I am buying a C8 base entirely on the reasoning of building it and being able to tune and not having the TCM tuning capabilities yet sucks. I hope they get it soon but it makes me wonder how they are going to be for the z06 or zr1 later on if the base is still taking this much time if it's even possible.
Reply
Old Nov 1, 2023 | 05:38 PM
  #28  
NoMatter's Avatar
NoMatter
What’s Next
Supporting Lifetime
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Dec 2020
Posts: 1,293
Likes: 834
From: Reality
Default

It will be coming. The TCM is highly complex also. HP has their hands full with many products. Could be supply demands or something they didn’t account for during testing. So many factors. It’s better not to keep giving false hope and wait from a business perspective. But I wouldn’t let that stop your plans. The fact we’re in the ECU is amazing huge for everyone.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-1

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-2

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-3

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-4

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-5

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-6

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-7

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-8

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-9

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
Old Nov 15, 2023 | 04:36 PM
  #29  
Kayvon D's Avatar
Kayvon D
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2011
Posts: 127
Likes: 62
From: South FL (Fort Lauderdale)
Default

Any updates or development on this?
Reply
Old Nov 15, 2023 | 05:26 PM
  #30  
degfu's Avatar
degfu
Thread Starter
Instructor
Conversation Starter
All Eyes On Me
Liked
Loved
 
Joined: Aug 2022
Posts: 205
Likes: 103
Default

Originally Posted by Kayvon D
Any updates or development on this?
A Big Nothing
Reply
Old Nov 15, 2023 | 07:02 PM
  #31  
combatninja's Avatar
combatninja
Melting Slicks
Community Builder
All Eyes On Me
Top Answer: 1
Top Answer: 3
 
Joined: Aug 2022
Posts: 2,784
Likes: 3,566
Default

Bummer. Getting ready to do a cam/heads/tune build but I really, really want to be able to see 7000rpm in all drive modes. I hope somebody figures this out soon. The C9 might be out before the C8 tuning gets figured out.
Reply
Old Jan 22, 2024 | 06:46 PM
  #32  
jplake's Avatar
jplake
Instructor
Photogenic
Liked
Loved
Top Answer: 1
 
Joined: Aug 2019
Posts: 174
Likes: 104
2025 C8 of the Year Finalist - Modified
Default

Still no updates on TCM tuning....
Reply
Old Jan 24, 2024 | 02:34 PM
  #33  
dironvictorious's Avatar
dironvictorious
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 304
Likes: 115
Default

Originally Posted by jplake
Still no updates on TCM tuning....
My twin turbo C8 will likely be amongst the first cars to get a HP tuner software update for the TCM that was/is expected this month. I don't know if this will enable full TCM tunning, or just address TCM behavior for high torque upshifts. @DOUG @ ECS probably knows more, and may be able to share more.
Reply
Old Feb 5, 2024 | 04:49 PM
  #34  
Kayvon D's Avatar
Kayvon D
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2011
Posts: 127
Likes: 62
From: South FL (Fort Lauderdale)
Default

Originally Posted by dironvictorious
My twin turbo C8 will likely be amongst the first cars to get a HP tuner software update for the TCM that was/is expected this month. I don't know if this will enable full TCM tunning, or just address TCM behavior for high torque upshifts. @DOUG @ ECS probably knows more, and may be able to share more.
Awesome if TCM is truly included... please keep us posted!
Reply
Old Feb 5, 2024 | 06:16 PM
  #35  
dironvictorious's Avatar
dironvictorious
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 304
Likes: 115
Default

Originally Posted by Kayvon D
Awesome if TCM is truly included... please keep us posted!
Will do!
Reply
Old Apr 20, 2024 | 09:57 AM
  #36  
itsonlyairandfuel's Avatar
itsonlyairandfuel
Melting Slicks
20 Year Member
Liked
Community Favorite
Top Answer: 3
 
Joined: Jun 2001
Posts: 2,258
Likes: 545
Default

2 months later, how is the tuning project?
Reply
Old Apr 21, 2024 | 08:48 PM
  #37  
dironvictorious's Avatar
dironvictorious
Racer
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2010
Posts: 304
Likes: 115
Default

Originally Posted by itsonlyairandfuel
2 months later, how is the tuning project?
I am getting a clutch boost controller installed this Wednesday along with some additional calibration. Still no full TCM tunning yet from HP Tuners. But clutch pressure is one of key factors in shift performance/feel and holding higher power with stock clutches. I would post here with updates later in the week.
Reply

Get notified of new replies

To TCM Tuning

Old Apr 21, 2024 | 10:20 PM
  #38  
ChrisNC's Avatar
ChrisNC
Instructor
All Eyes On Me
Liked
Loved
 
Joined: Mar 2018
Posts: 107
Likes: 34
Default

Originally Posted by dironvictorious
I am getting a clutch boost controller installed this Wednesday along with some additional calibration. Still no full TCM tunning yet from HP Tuners. But clutch pressure is one of key factors in shift performance/feel and holding higher power with stock clutches. I would post here with updates later in the week.
So the newer software updates for the tcm do in fact have some calibration changes you can do to help shifts? What if the transmission was built with upgraded clutches what could potential hp be that it hold for any longevity if so?
Reply
Old Apr 24, 2024 | 03:18 AM
  #39  
GTS Bruce's Avatar
GTS Bruce
Drifting
 
Joined: Aug 2019
Posts: 1,285
Likes: 647
Default

Cant help yourself. I understand it. Money better spent upgrading to the next model rather than waste money on no return modifications
Reply
Old Apr 25, 2024 | 05:24 PM
  #40  
Kayvon D's Avatar
Kayvon D
Instructor
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Nov 2011
Posts: 127
Likes: 62
From: South FL (Fort Lauderdale)
Default

Originally Posted by dironvictorious
I am getting a clutch boost controller installed this Wednesday along with some additional calibration. Still no full TCM tunning yet from HP Tuners. But clutch pressure is one of key factors in shift performance/feel and holding higher power with stock clutches. I would post here with updates later in the week.
Good stuff, I'm really interested in hearing your thoughts on how the 'tranny controller' shifts in regular driving and holds all the extra turbo torque you're putting down when you're under WOT/boost.
It's not a TCU unlock yet but if it gets the job done nicely then I wont tell noone..
Reply



All times are GMT -4. The time now is 12:30 PM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE