I have a 2013 E38 that I am using on a hot rod project. I received a T42 with the E38, plugged them into the harness, did a read entire and licensed them. Then I found out that the T42 was a pre 2009 and would not work with my 4L80E. The company then sent me a 2009+ T42, but I would like to know if I will have to use more credits when I do another read?
Thanks
DW