what on earth is the difference lol? from my perspective, the twin kicks in at the same time while the bi turbo one blows off earlier other spools and the other kicks in later continuously switching off...
PS: anyone know who makes the superchargers and turbos for benz amg's? one of my friend jokin bout the 335i alot as the turbos are from mitsubisishi calling it rice LOL. he is a friend and i know its a joke but i just wanna know the benz so i can show him up too