Transmission Tune
Thread Starter
Advanced
Joined: Aug 2023
Posts: 54
Likes: 10
From: Portsmouth VA
Transmission Tune
Another newbie question, I see transmission tune referred to. What is this and what does it do or not do?
I'm from the TH400/ B&M Shift Kit generation and trying to get current!
I'm from the TH400/ B&M Shift Kit generation and trying to get current!
Burning Brakes
Joined: Feb 2021
Posts: 771
Likes: 399
2022 C6 of the Year Finalist - Unmodified
It makes your A6 wake up and smell the coffee!!!!! I do not know the technical side of it, but after my dyno/street tune, it was a different animal...... You will get a little power, but the drivability experience is worth the cost. My session cost me around 700.00 (road and dyno tune). You can probably go just dyno and save 200, but I feel better with the road conditions added to the build of the tune.
Instructor
Joined: Feb 2015
Posts: 155
Likes: 49
From: Kentucky
I'm like blownbayou and don't know the mechanics of it ,but the tune increased the pressure on the shift points which made the trans shifts firmer.I didn't want it slamming into the next gear but just a crisper shift.
Thread Starter
Advanced
Joined: Aug 2023
Posts: 54
Likes: 10
From: Portsmouth VA
One thing I have noticed is a slight flair on upshifts under light throttle. This does not happen in competition mode. Will a tune help this? BTW, car has 44K miles. Just bought it a few months ago.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
A trans tune can change pressures, up and down shift points, which can allow and assist power flow to improve performance. It's all done electronically. Since you have an '09, I'd suggest you should contact Jim Mero (google and search on this forum), who was the GM trans guru. He's created tunes to fit all sorts of conditions according to your driving style and needs. If you're looking for raw acceleration performance, a higher stall torque converter makes even larger differences along with a compatible tune. It all depends on how serious you want to get and how hard you want to play. Talk to Jim first.
Le Mans Master
Joined: Dec 2013
Posts: 6,338
Likes: 5,115
From: Charles Town WV
2024 Corvette of the Year Finalist - Modified
2023 C6 of the Year Winner - Modified
2022 C6 of the Year Finalist - Modified
typically yes.... 6l80e and newer transmissions have tons of control tables that can be tweaked. Software also exists that helps produce those tables that tuners use with inputs for car weight, stall speed, ect. I've done a little tuning on them myself and their a whole different animal than the older 4l60 junk. Def not for the faint of heart but once you have a general understanding they arent too bad. You can also enable/disable things like TUTD and auto upshift.
Great reference here
https://www.ssforums.com/threads/how...e-only.197298/
Race Director
Joined: Jun 2004
Posts: 13,961
Likes: 707
From: WI
There is some info at this link that shows what is done in transmission tuning: http://www.masterenginetuner.com/4l6...nsmission.html
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