Hey about power ect snow and over drive first of all over drive it should really be on when driving on the open road if over drive is off it will show more RPM on the dash that uses more gas but is good for over taking and power. Power ect gives you more rpm for take off and it does work but it is not launch control the snow switch is for kinda what it says it lowers the rpm and is good for towing or getting up a hill but is not for off road use Here is a photo of my car