Hi all, could someone please take time to explain some EFI live autocal basics to an admittedly ignorant user. I have an autocal that came with a delete kit and I installed the tune with the deletes. Ran great. Got the unlock code and had another tuner custom tune for some modifications. Runs great.
Can I put the old tune file on the device and use the old tune by flashing to the truck? Will I need another unlock code ? If I do this can I keep the new tune? How do I do this on my laptop...I do have the software downloaded.
Thanks
2017 Cummins 2500