1997 Silverado 5.7 Vortec 4l60e

i have a 1997 Silverado C1500 5.7 vortec thats got some jegs long tubes no cats and a 0411 swap, today i finally got my front o2 sensors put in and the truck runs okay on open loop a little rough and had been driving all week. although with the o2 sensors put in when the truck goes to closed loop it starts to kill itself. not super tune savy and definitely not experienced enough to come up with my own reasons. base file i used should be a 02 express with the 5.7 4l60e not sure why there would be a huge difference. i have 2 logs back to back just different channels and the tune file the truck is on right now. Any feedback is much appreciated and im more than willing to learn! Thanks!
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Have your evap setup correct? Unplug it ...by thermostat..

Something is up with those o2 sensors, wiring, something... They are reading full rich and if you look at your trims it's pulling fuel out like crazy trying to lean it out.

My buddy was having a similar issue on his 98 as well as a drastic bank to bank split at idle. The 02 sensors had horrible placement in the headers. He moved the 02s about 6-8" downstream of the collector and drastically changed the 02 sensor signals.

Shouldn't have voltages that high with the O2's. Wiring problem most likely.