I have a replacement ECM/TCM combo coming that I will be tuning, but I'm not going to be able to have the relearn done for a week or so. this saturday I have some parts to pick up in both tampa and miami, and I want to log the trip. My question is, can I datalog off the original ecm/tcm without it costing any "credits"? Also, does anyone know the standard thread size of a WB O2 sensor?