You'll never get 4.2secs 0-60 in the CR, even with LC on. For some reason, the LC in the CR is bloody awful, and even with PCM on or off it skips and hops and doesn't really know what it's doing. It's the same tech as in my old 911, which was absolutely flawless. Neither me nor my brother could work out why mine was so good and his so terrible!
Not that it's remotely about 0-60 mind, the grunt between 30-120 is just superb.