its very dependant on condition of car, and as everyone knows not all cars produce manufacturers quotes figures for power. In French cars its usually higher, so this may apply to both vehicles. Also power to weight is not the be all, as gearing comes into play, just like torque is not as much as issue at higher speeds as some make out (CTR is perfect example of decent gearbox and a fast motorway car will a relatively low torque figure). there are too many deciding factors, but from 1/4 miles of what people have got the VTS are usually slightly quicker than the valvers (not sure about 106gti, seems more varied in result), but these I think are with terminals around 80-90, which is where i would imagine seeing the vavler pull back or pull further away.
put em up side by side, if your m8s not game for TLGP then do some 2nd gear rolling starts at 30mph, then some 70mph 3rd gear starts etc, that will give you at least some idea of where the two cars are better performing.
and 14bhp from and IK... think their guestimates, either that or they put it on a Ferrari F40 and it gave it an extra 14bhp, in which case they can saw upto 14bhp extra. More likely to be about 4-6 at best.
[Edited by TheJesus on 10 May 2004 at 3:19pm]