I pulled the factory tune out of the ECU that came with the motor(i have kept it untouched) , it is a 2004 8.1/Allison. I swapped in a 4L80E 4X4 segment and diagnostics, killed all of the "unnecessary" stuff, anti-theft, changed all Electronic Throttle stuff to cable stuff. fattened up VE a bunch, opened up the torque limits..... took a test drive - it be lots better. now I'll start the tuning process. any advice as where to start? I'm thinking CALC.VET?? here is a copy of the current tun that I am planning to start with

2004 8.1 ex.ctz