I`ve noticed my LTFT`s going crazy and I have read about the Cat Diagnostics Test on 04+ years. I have a 05 Impala SS with the same problem as the others with yall running rich and sometimes slight KR here and there. I am wondering if there is a way around this and if I can get any help, I dont wanna waste my money on a tune with HPTuners Pro when it will get no where. I also have HPTuners standard but thats useless also, well not useless but for this purpose of deleting the Cat Diagnostics Test system then yes its kinda useless from what i`ve read. Can anyone help me with this please.
