well i think the way the japanese car companies think that they should push as much power as they can out of small displacement and smaller engines.. i mean how many japanese supercars in the past were v8s? and how many were turbo/twin turbo? almost all of them, but nowadays they are going for all motor.. like the Z n the skyline coupe (not gtr) i think they figured out that too many people don't know how to maintain a turbocharged car