Hi, I'm a rookie with HP Tuners and was wondering if someone could help me out. I have a stutter at idle ever few seconds that feels like a misfire despite indicating any. I have noticed my 02 sensors dropping and rising cyclically and wonder if anyone can help me diagnose what's going on here. 2011 GMC Sierra 1500 SLE, V8 53 Gen IV, LC9. The only modification that I have done is an AFM/DOD Delete last Spring with a stock (non-AFM) cam and lifters.
Log: 21-01-25 13-21-51.hpl
Tune: 2011_GMC_Sierra_1500_SLE_V8_53_Gen_IV_LC9_AFM_Disabled_2020_06_20.hpt
Any insight is welcome. Thanks,
-James