I agree that the V6 calibrations appear to be entry level programming. The AZTY appears to be an improvement over the ARDC in that the code is better organized. The ARDC jumps around alot. The code is similiar in the AZTY, but they moved it around and better organized it. Anyway is $40,bit #20 the PE enable in the AZTY? If so were is the table to richen the afr?