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i have a 2019 challenger rt with the 8-speed auto and need help with my trans tune. I can't seem to get it to shift when I want during a wot pull in 1st going into second. I have had others look at my tune and it has helped, but I'm running out of ideas what it could be other than a mechanical fault with the transmission. any help will be appreciated
here is my tune files for anyone interested in helping or just wants to add to their collection
Attachment 119544Attachment 119545
When does it want to shift versus when You want it to shift?
NOTE: Because of 1st gear's crazy 4.71:1 gear ratio that spins the engine so fast, its takes more time for the trans to make a decent shift without either binding or slipping.
So you need to give the 1-2 a good 300-400rpm extra than all other gears. So if you want to shift at 6700rpm..1-2 should be 6300-6400rpm or so.
its the factory 5.7 convertorQuote:
Originally Posted by spoolboy
i have it set for 5600 rpm, but it doesnt shift until 6700ish rpmQuote:
Originally Posted by duster360
Did you get it sorted? I thought it odd that your aggression-based patterns > situation mapping table does not ever assign driver type 10-14 yet those driver types are in the > Aggression Mapping tcm 30002 table. Do you have a log of it running into the limiter?
Yes. However i was not able to log the aggression tables or counters when it happened
What did you do to get it to shift? And do these cars never use those driver types? (11-14)
probably not the way your soppose to but i lowered the shift point enough so it had plenty of room to shift, it was the only thing i can do. even had people look at it and nothing seemed to help. hopefully haveing someone else look at it and see if they can make it work right
Hello james1595,
I can help you!
Please, get in touch via email: [email protected]
Thanks.
Dodge Boy
https://www.youtube.com/@dodgeboy2785