A friend of mine has a 300 with the dreaded TCM comm error. He is going to replace it with a new PCM.
He has a diablo tune in the existing PCM. He called me to ask what would need to be done. Can he pull the diablo tune ,save it and transfer it to the new one? Will he have to flash his VIN to the new PCM.
OR
If he decided to just have me tune the new one, will I have to change the VIN in the new one??
Thanks!