I need some help diagnosing my lean issue on my boosted 02 Camaro. Currently I've swapped to a larger 350lph pump from an 255lph. I've also replaced my fuel filter. I'm on 91 octane using Siema Deka 60lb injectors. The car was tuned at the end of 2013 and as of last summer it started leaning out. I'm seeing A/F's above 12...reaching to the 13's:banghead :banghead. I've attached a copy of my .hpt file and I'm hoping someone can shine the light on my tune. The only thing I can think is maybe my widebands O2 is dying and not reading accurately.