When upgrading from 99 OS to 2001 still doesn't retain the CPK data. Had to do a relearn..... BUT....can't do a re-learn with 7.3 Scan because mph (reading zero) will not turn green :cry: Had to say a few bad words here........Switched back to version 7.2 and did the re-learn - seemed to work ok.

Also not really a bug but if you have added LC1 wideband stuff to your calculated pids, you will have to remove after installing 7.3 as it is in the SAE-generic.txt now and this will throw an error.

Tune upload time is just smoking fast now.