Using Tune Files From Another CAL ID
 

I bought a bunch of parts and an OFT from a buddy. He loaded the stock tune in his car before he gave me the OFT, but I still had to erase it before use. It had a couple of tune files I want to use (tuned for the JDL 4-2-1 catless header) that I downloaded before erasing the OFT. The problem is that his CAL ID was JN10C and mine is JK00C. Is there an easy way to use his tune files? I downloaded Romraider, but I'm not sure I want to dive that deep into things at the moment.

I think the simplest thing to do is load up the 2 (correct) definitions in RomRaider. Open both roms, compare and copy the different tables to the correct rom.

You could also try hex-editing the rom since both are going to be a K00G internally anyway.