Please do a hell of a lot more searching or we'll soon be seeing a "i blew my motor up" post. Everyone has to start somewhere. The Vfaq should be your best friend right now.

DSMlink is an incredible tuning device, but if used improperly you will can cause major damage real quick. You can't just go in and change settings without a working knowledge of what exactly you are changing.

Since you seem to need help installing a simple BOV, DSMlink and GM 3bar should be the last things on your mind at this point.