There are only a few companies that have the license to use an app or software to bypass the secure Gateway module you'll have to buy actually a cable or a module to do it. All of the scan tools that can bypass the secure Gateway module cost thousands of dollars you're much better off buying a...
Tune is emission intact Tuning, Delete is removing all ( AECDs ) Auxiliary emission control devices, Deleting if you live in CA would provide less risk, just make sure you have control over you tuning..