I just got my 88 Mustang 4L80E/5.3/S475 Turbo swap running and I need some suggestions about how to tune the transmission for firmer shifts. I am tuning with EFI Live and have turned the adaptive shift learn to 0.00. What other tables or values do I need to adjust?

 

You need to put a line pressure gauge on it and tune the pressures. Force motor, EPC, or PCS vs. MAP. You should be able to change it from TPS to MAP in EFILive.
I can explain it in more detail if you want to call the shop tomorrow.

 

Wow that's great, I will call tomorrow.