Quote:
Originally Posted by clarence
The variance need not be that big. As we all know, cars with 28i are regularly dyno'ed with much more than 245ps. It can very simply be that anything less than 245ps on the factory bench will be destined as a 20i, & anything more a 28i.
BMW claims the 20i have 184ps & the 28i have 245ps, those are only factory claims (i.e. minimum baseline) & it's perfectly fine to beat those figures on a regular basis. There are evidence that the 20i have more than 184ps, e.g. Autozeitung tested a 520i & recorded 0-100 time of 7.3s.
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Well.. but if the peak of the distribution is really around 240HP, and you cut it below, say, 230HP, then the mean of that distribution will be very close to the cutoff, and will be 30~40HP more than the claimed 180HP. Are you saying that the 320i ON AVERAGE will put out 30~40 HP more than the factory claim? That would basically give it the same performance as the 328i, whereas the gap is much more significant. Sorry, I think it's an interesting theory but it just doesn't make sense to me.