Have these injectors installed with wideband in the x pipe and my truck is around 14.5 to 15 at light throttle but wide open it gets lean all the way up to 17 and ecu throws lean code as well tuner us using hp tuners any help greatly appreciated here's a list of my mods.

05 1500hd , Lq9 .30 over, Btr stage 3 truck cam, 243s milled flat clean up port, 1.57 2.02 valves,Delphi 17113739 injectors, Btr dual spring t retainers, Btr 7.4 pushrods, speed engineering 1 3/4 long tubes, 3 inch exhaust into MagnaFlow di/2.5 do, s&b cai.

 

can't help without seeing the tune file and a data log.