well like i said before alot of people think that when we flash the computor it retards the timing but what it does it gives us another option on our DRB3 scan tool that alows us to retard the timing up to 4 degrees and if we just leave that option at o the timing stays the same so i don't really know how the term came about unless the techs did retard the timing you shouldn't notice any difference but in the shifting and then the timing could be put back to o again or back to -4 over and over