threw a p0171

[birdman]

First i'm brand new to efi{feul trim lean bank 1}just checked both banks as follows-bank1 25=min-25.8,avg-25.8,max25,bank2-min-38.3,avg-38.3,m ax0.0,anybody got any suggestions,also looked at duty cyle,bank1 {1145}bank2{1082}this is 98 camaro ls1,only mods lid,gear,catback exhaust

[TAQuickness]

Welcome to the forum birdman!

Is that a -25 or a +25 on bank1? And bank2 -38 or +38?

Sounds as if you may have a failing injector or dead coil pack. As an easy test, you could swap the coil packs from bank to bank, zero your trims and DTC's and run a new log. If the problem doesn't move to bank 2, then I'd try swapping the injectors from bank to bank to see if the problem moves.

[birdman]

these are neg-for both

[birdman]

02 sensor{sensor1} was the culprit