KTuner.com

When I flash the tune my car will keep it on until I turn the car off and then when I turn it back on the tune will not be on anymore, how do I fix this? and also is there somewhere that I can download new tunes for the Ktuner V2 that is a little more specific to everything I have on the car?

A tune can't be overwritten without flashing.

If you actually mean the on the fly map switching selection, that's outlined right in the help for the feature.

All tunes outlined on the website are included right in the software.