After doing my swap, i never did a case learn. the Engine and trany came from a a 1998 Z, the PCM came from some 1998 GM car dont remember which, the harness from a different 98 Z and the file was a bin obviously for a 98 Z.

it hasnt given me any real problems except for some phantom KR of .05* and .7* at times... which i feel is strange. any how, was thinking what effects not doing a case learn would cause. i know on the extreme side, that it just wont run. im wondering if it was just a little bit off that it could cause minor issues?