So my friend recently purchased an VW Jetta Wolfsburg edition Turbo. We were talking about it and we wanna upgrade his turbo system and get some more power. The point of this thread is that I have never dealt with a turbo before and we were wondering what might be the most efficient way to go about this? It all started with him wanting to buy a blow-off valve, but is it even necessary? i figure it doesnt come with one because it wouldnt be of any advantage at this point? i dont believe his car has an intercooler either, so would that be the next step? I just wanna talk about this with someone who knows something and im down for any ideas or suggestions! just let me know what you think. Thanks. Also i just figured i would say its not that i dont know ANYTHING about turbos, i have read about them and i have a basic understanding of the principles and how they work. But this will be my first time actually working with one.