i am finally understanding tuning, this has been a lengthy process of about 2 yrs. Do I understand correctly I can data-log using EEHACK, then go under analyze and find precisely where my ECM added fuel or subtracted fuel, as well as where I have knock retard? If that is the correct I can then go in to TunerPro and under those specific areas EEHACK showed I can then add or remove the ammount of fuel EEHACK showed, where needed, as well as retard the timing where EEHACK showed knock? Then flash my corrected file to my ECM using FLASHHACK? Thanks all. - AJ