Pardon me if I'm a little reluctant after my burn with ADTR Jet performance module that didn't work.
I'm a little confused when you say just unplug it and revert back to normal.
All of the Hypertech modules I've seen, plug into the under dash diagnostic port so the new program is downloaded into your PCM and then it is unplugged. It stores the original data in its memory which can be later downloaded back in.
Each programmer is specific to only one VIN # so it can't be swapped between different cars.
I also have not been able to get in touch with C-Ya Racing......maybe big brother GM caught wind of his competition.
I have touched base with ZZP and they can offer a basic DHP module that replaces the original PCM for $299. + a $125 core charge. All US$$