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the vvc in a zs needs the g box and the conversion doing in a way that does not sacrifice the gains of the vvc - amazing how many just bolt up a 120 exhaust to the 160 motor.
Whilst the vvc even with the 170 map offers no gain below 4 or 5k, it at least gives you the power/revs if you need it, either for a safe overtaking manoeuvre or a day at the track.
It is no v6 and never will be, but the k4 offers great economy and a lighter front end, the v6 has torque but needs a 4.2 final to bring it to life.
Horses for courses.
The vvc cost more to produce than the v6, hence rover building the k4turbo, which is a great engine for the road.
To add to that, the vvc in a zs is not much slower than a v6 at the circuit on raceday, the v6 is faster, but not by miles.
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