1998 454 throwing code p0175, rich on bank 2

[newguyinnc]

Have a 1998 k2500 , 454 rebuilt 11,000 miles ago. Literally everything new. I have a good scanner that I can see live data on and when #8 injector was shut down, it kept running smooth, so it was replaced. Still running rich on bank 2. Fuel injectors, fuel pressure regulator , map sensor, etc all new. Any ideas on where to start looking?

 

[yevgenievich]

Exhaust restrictions checked? Were all injectors replaced or just #8?