2006 5.3 Vortec GM truck with mild upgrades tuning help needed

Hello, First time making an attempt at tuning a 5.3 vortec and this thing is a mess. It has pacesetter 3" headers and 3" all the way back. No Cat and just a pass through muffler.

Extremely rich with stock file. Did some minor adjustments to the trq tables and turned off 02 sensors and now the thing runs worse then it did before. Extremely sluggish on initial throttle and creeps to 5000rpm to shift....

Any Ideas of what I may have missed or should be looking at?

Need logs to help .
Without CATs it will smell rich , when it is not .

which tables do you need logged in the pid selection? If I just select the default will that be enough?

Yeah , that will do for a start .
Log + .tun file .

what torque tables did you adjust

which o2 sensors did you turn off

post starting .tun vs the .tun you have now.

do you have a wideband O2 sensor installed that you're logging as well?