Quote:
Originally Posted by gbb357
My point is, your figures with e46 M3 to 60 @4.5 and you Cartest results of 4.84 is a diifference of 0.34, and that's acceptable. Should'nt the 4.7 and 4.2 difference of 0.5 on the ISF results be acceptable as well? In other words, there is a margin of error. I don't think it's necessarily an exact science. In terms of the RS4, remember it is close to 200lbs heavier.
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No one single data point really makes or breaks the simulation vs. test comparison.
It is the over/under predictions of the entire set as well as the size of those overs/unders. You seem obsessed with the 0-60 time. That is not the point. Finally, for the vast majority of the time, CarTest is not out by .5 seconds 0-60.
P.S. I think it is time you bought the sotware and had some fun. I guarantee you will learn a lot and enjoy it! However, as you can see on my posts here about the M-DCT times it can sometimes be very trick/subtle to get a good prediction. Some engineering background is a very good idea but certainly not required. Cheers.