Ok i'm a little confused, i read somewhere that with BBL we cant log GM.DYNCLAIR_DMA if this is the case is there something else that i can log so as to be able to link my logs to the High/Low spark tables. At the moment any BBL i do and then check them back against my spark tables, no matter where abouts in the air flow range i am it only links to the 0.08 grams/cylinder column.