Has no one taken into account the X1's crappy aerodynamics and high center of gravity? Thats its major weakness..powerwise I agree a tuned tuned turbo would put down gobs of torque that would pull on an m3.
My tuned 335i n54 would consistently beat M3s in 0-60..top end higher speeds, the m3 has the advantage...then again we are talking the same chassis base..not an SAV
