Hi Guys! New to this amazing game. Had a question. Can you use Darth Vaders pilot card and his upgrade card (on another ship obviously lol) in the same game?

No, the cards are unique which means you could only use one. If you were using an app like Startacticks, the app would have not allow you to choose a second unique character from Star Wars. A while ago I wanted to fly RAC with Vader and Vader ace, but it's not possible in X-Wing game.

Check out the rulebook under "Unique Names"

Worth noting that you can use them on different sides in the same game, the limitation is on what a single squad can equip.