or, how would my tune which is supposedly customized to the box code of the car it's in, work on the other 96 pcm with a different box code?
you could probably get away with swapping the whole ecu, but i don't think you can use a chip programmed to one code with another code.
you know i thought that too, but then i stuck my w3z2 chip into my w3z3 computer and it worked just fine.
so who knows...
i think it has more to do with computer strategies than catch codes. some catch codes have the same strategy.
this is all chips though.
if you have a handheld tuner, i have no idea. swapping the pcm is a better bet.
its not hard to do or anything.