it can be done. All of the electronics. Will it be easy? No. Need to rip and replace all modules, get a full read on a bench from one of their PCMs, write it back with vin, and everything else should fall into place. Would have to enable everything in the bcm. The TCM I’m not sure about. I haven’t heard of anyone overwriting what’s already in there besides the calibration. That being said, vin DOES NOT MATTER for TCM. My A8 is from a 2016 charger, zero issues and Witech was able to update the base calibration and hp tuners change the calibration. But it does still show the vin from the charger and that it’s from a 2016 charger.