Hello christianreid22,
Stock trans tune was done based on stock engine. So, if your engine behaves differently now, potentially transmission will "get lost" in some specific areas or trans will not delivery to wheels all the power added in the engine.
Without deeper analysis, I would suggest updates on:
- Shift schedule (in case torque and power bands were changed)
- Torque management (once it runs with E85)
- Shift pressure (once it has more torque and power)
- Torque converter (once it has more torque and power)
Yes, it is possible to perform a "mild" tranny tune, as well as a good/solid/personalized tune which will take advantage of every single torque/power added in the engine.
Let me know if you need specialized support.
Dodge Boy
https://www.youtube.com/@dodgeboy2785