I did a Cam swap, valve springs, pushrods, AFM delete, long tube headers, MSD atomic air intake, E85 kit, 3600 circle D stall. Had the vehicle light tuned and drove it about 150 miles and noticed a raw fuel smell coming from the exhaust Past few days driving and when tuner tuned it, stayed between +10 & -10. Today CEL popped on with P0068 & P0101. Checked fuel trim and found Bank 1 and Bank 2 short term fuel trim is at +31% at idle. no vacuum leaks found, LTFT is turned off. Found O2 sensors for bank 1 (bank 2 is shut off) is at 20-40mV.
Any thoughts of what could be causing this issue? and yes im running stock O2 not a wideband O2 sensors