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Has anyone tuned their A10 transmission?

ThunderMelon

New Member
Joined
Feb 18, 2026
Messages
2
Location
Tennessee
V-Series Cadillac(s)?
2023 CT5 V Blackwing
Curious is anyone has tuned their A10 transmissions in their 5BW. I just purchased one that has a built engine and I’m considering the transmission tune from Tapout. They originally tuned the engine and it’s great, but I’m wondering what the benefit of a tuned transmission would be. I don’t drag race the car, but I would prefer some smoother downshifts when coming to a stop light sometimes. I’ve noticed that the car will be smooth all the way down to third gear, but the downshift to second and first cause a stumble sometimes and is a bit rough. I plan to take the car back to Ohio in the coming weeks to have it retuned now that it has additional parts added since the last tune(LMP heat exchanger, 30% fuel injectors). Car made 875hp on the flex fuel tune with the mods listed in the YouTube thread when it was built last February.



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Obviously a much different car and transmission but my Livernois tune I added to my SS absolutely woke her up. My SS was an A6 and would chirp into 2nd any time I wanted and once in a while 3rd would too. Not sure how much performance was enhanced but definitely felt faster with those hard shifts.
 

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